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12875988 = 2231072999
BaseRepresentation
bin110001000111…
…100011010100
3220020011112110
4301013203110
511244012423
61135551020
7214305216
oct61074324
926204473
1012875988
1172a4a14
12438b470
13288a938
1419d25b6
1511e5193
hexc478d4

12875988 has 12 divisors (see below), whose sum is σ = 30044000. Its totient is φ = 4291992.

The previous prime is 12875981. The next prime is 12876001. The reversal of 12875988 is 88957821.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×128759882 = 331582133952288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12875981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 536488 + ... + 536511.

Almost surely, 212875988 is an apocalyptic number.

It is an amenable number.

12875988 is an abundant number, since it is smaller than the sum of its proper divisors (17168012).

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

12875988 is a wasteful number, since it uses less digits than its factorization.

12875988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1073006 (or 1073004 counting only the distinct ones).

The product of its digits is 322560, while the sum is 48.

The square root of 12875988 is about 3588.3126954043. The cubic root of 12875988 is about 234.3834024365.

The spelling of 12875988 in words is "twelve million, eight hundred seventy-five thousand, nine hundred eighty-eight".

Divisors: 1 2 3 4 6 12 1072999 2145998 3218997 4291996 6437994 12875988