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102665260 = 2255133263
BaseRepresentation
bin1100001111010…
…00110000101100
321011011221021001
412013220300230
5202240242020
614104250044
72354432425
oct607506054
9234157231
10102665260
1152a51a25
122a470924
1318367999
14d8c664c
15902e50a
hex61e8c2c

102665260 has 12 divisors (see below), whose sum is σ = 215597088. Its totient is φ = 41066096.

The previous prime is 102665243. The next prime is 102665281. The reversal of 102665260 is 62566201.

It is a super-2 number, since 2×1026652602 = 21080311221735200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2566612 + ... + 2566651.

It is an arithmetic number, because the mean of its divisors is an integer number (17966424).

Almost surely, 2102665260 is an apocalyptic number.

102665260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102665260 is an abundant number, since it is smaller than the sum of its proper divisors (112931828).

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

102665260 is a wasteful number, since it uses less digits than its factorization.

102665260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5133272 (or 5133270 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 102665260 is about 10132.3866882389. The cubic root of 102665260 is about 468.2464611211.

The spelling of 102665260 in words is "one hundred two million, six hundred sixty-five thousand, two hundred sixty".

Divisors: 1 2 4 5 10 20 5133263 10266526 20533052 25666315 51332630 102665260