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468391680 = 2833513553
BaseRepresentation
bin11011111010110…
…001011100000000
31012122100202121000
4123322301130000
51424402013210
6114251132000
714415156261
oct3372613400
91178322530
10468391680
11220438669
12110a44000
1376069053
14462c8968
152b1c2ac0
hex1beb1700

468391680 has 144 divisors (see below), whose sum is σ = 1662262560. Its totient is φ = 124895232.

The previous prime is 468391657. The next prime is 468391681. The reversal of 468391680 is 86193864.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (468391681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27784 + ... + 41336.

It is an arithmetic number, because the mean of its divisors is an integer number (11543490).

Almost surely, 2468391680 is an apocalyptic number.

468391680 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 468391680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (831131280).

468391680 is an abundant number, since it is smaller than the sum of its proper divisors (1193870880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

468391680 is a wasteful number, since it uses less digits than its factorization.

468391680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13583 (or 13563 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 468391680 is about 21642.3584666736. The cubic root of 468391680 is about 776.6101411786.

The spelling of 468391680 in words is "four hundred sixty-eight million, three hundred ninety-one thousand, six hundred eighty".

Divisors: 1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 27 30 32 36 40 45 48 54 60 64 72 80 90 96 108 120 128 135 144 160 180 192 216 240 256 270 288 320 360 384 432 480 540 576 640 720 768 864 960 1080 1152 1280 1440 1728 1920 2160 2304 2880 3456 3840 4320 5760 6912 8640 11520 13553 17280 27106 34560 40659 54212 67765 81318 108424 121977 135530 162636 203295 216848 243954 271060 325272 365931 406590 433696 487908 542120 609885 650544 731862 813180 867392 975816 1084240 1219770 1301088 1463724 1626360 1734784 1829655 1951632 2168480 2439540 2602176 2927448 3252720 3469568 3659310 3903264 4336960 4879080 5204352 5854896 6505440 7318620 7806528 8673920 9758160 10408704 11709792 13010880 14637240 15613056 17347840 19516320 23419584 26021760 29274480 31226112 39032640 46839168 52043520 58548960 78065280 93678336 117097920 156130560 234195840 468391680