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268204160 = 2757131457
BaseRepresentation
bin11111111110001…
…11100010000000
3200200200011221102
433333013202000
51022130013120
642340313532
76434461220
oct1777074200
9620604842
10268204160
11128437834
12759a28a8
13437475b3
1427898080
151882cd75
hexffc7880

268204160 has 128 divisors (see below), whose sum is σ = 739981440. Its totient is φ = 91054080.

The previous prime is 268204159. The next prime is 268204163. The reversal of 268204160 is 61402862.

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (268204163) 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, 586652 + ... + 587108.

It is an arithmetic number, because the mean of its divisors is an integer number (5781105).

Almost surely, 2268204160 is an apocalyptic number.

268204160 is a gapful number since it is divisible by the number (20) 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 268204160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (369990720).

268204160 is an abundant number, since it is smaller than the sum of its proper divisors (471777280).

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

268204160 is a wasteful number, since it uses less digits than its factorization.

268204160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614 (or 602 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 268204160 is about 16376.9398850945. The cubic root of 268204160 is about 644.8942478305.

The spelling of 268204160 in words is "two hundred sixty-eight million, two hundred four thousand, one hundred sixty".

Divisors: 1 2 4 5 7 8 10 14 16 20 28 32 35 40 56 64 70 80 112 128 131 140 160 224 262 280 320 448 457 524 560 640 655 896 914 917 1048 1120 1310 1828 1834 2096 2240 2285 2620 3199 3656 3668 4192 4480 4570 4585 5240 6398 7312 7336 8384 9140 9170 10480 12796 14624 14672 15995 16768 18280 18340 20960 25592 29248 29344 31990 36560 36680 41920 51184 58496 58688 59867 63980 73120 73360 83840 102368 117376 119734 127960 146240 146720 204736 239468 255920 292480 293440 299335 409472 419069 478936 511840 586880 598670 838138 957872 1023680 1197340 1676276 1915744 2047360 2095345 2394680 3352552 3831488 4190690 4789360 6705104 7662976 8381380 9578720 13410208 16762760 19157440 26820416 33525520 38314880 53640832 67051040 134102080 268204160