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80663572 = 221117107839
BaseRepresentation
bin1001100111011…
…01010000010100
312121210010121201
410303231100110
5131122213242
612000522244
71666425523
oct463552024
9177703551
1080663572
1141594810
1223020384
1313933432
14a9da4ba
1571354b7
hex4ced414

80663572 has 24 divisors (see below), whose sum is σ = 163054080. Its totient is φ = 34508160.

The previous prime is 80663567. The next prime is 80663593. The reversal of 80663572 is 27536608.

It is a super-2 number, since 2×806635722 = 13013223695598368, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53172 + ... + 54667.

It is an arithmetic number, because the mean of its divisors is an integer number (6793920).

Almost surely, 280663572 is an apocalyptic number.

It is an amenable number.

80663572 is an abundant number, since it is smaller than the sum of its proper divisors (82390508).

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

80663572 is a wasteful number, since it uses less digits than its factorization.

80663572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107871 (or 107869 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 80663572 is about 8981.2901077740. The cubic root of 80663572 is about 432.0750112658.

The spelling of 80663572 in words is "eighty million, six hundred sixty-three thousand, five hundred seventy-two".

Divisors: 1 2 4 11 17 22 34 44 68 187 374 748 107839 215678 431356 1186229 1833263 2372458 3666526 4744916 7333052 20165893 40331786 80663572