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102440960 = 21354161
BaseRepresentation
bin1100001101100…
…10000000000000
321010202112120122
412012302000000
5202211102320
614055355412
72352506456
oct606620000
9233675518
10102440960
1152909456
122a382b68
13182b986b
14d8689d6
158ed7d25
hex61b2000

102440960 has 112 divisors (see below), whose sum is σ = 255967992. Its totient is φ = 39321600.

The previous prime is 102440911. The next prime is 102440969. The reversal of 102440960 is 69044201.

It can be written as a sum of positive squares in 4 ways, for example, as 25563136 + 76877824 = 5056^2 + 8768^2 .

It is not an unprimeable number, because it can be changed into a prime (102440969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1679330 + ... + 1679390.

Almost surely, 2102440960 is an apocalyptic number.

102440960 is a gapful number since it is divisible by the number (10) 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 102440960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127983996).

102440960 is an abundant number, since it is smaller than the sum of its proper divisors (153527032).

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

102440960 is an frugal number, since it uses more digits than its factorization.

102440960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133 (or 109 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 102440960 is about 10121.3121678960. The cubic root of 102440960 is about 467.9052088438.

The spelling of 102440960 in words is "one hundred two million, four hundred forty thousand, nine hundred sixty".

Divisors: 1 2 4 5 8 10 16 20 32 40 41 61 64 80 82 122 128 160 164 205 244 256 305 320 328 410 488 512 610 640 656 820 976 1024 1220 1280 1312 1640 1952 2048 2440 2501 2560 2624 3280 3904 4096 4880 5002 5120 5248 6560 7808 8192 9760 10004 10240 10496 12505 13120 15616 19520 20008 20480 20992 25010 26240 31232 39040 40016 40960 41984 50020 52480 62464 78080 80032 83968 100040 104960 124928 156160 160064 167936 200080 209920 249856 312320 320128 335872 400160 419840 499712 624640 640256 800320 839680 1249280 1280512 1600640 1679360 2498560 2561024 3201280 5122048 6402560 10244096 12805120 20488192 25610240 51220480 102440960