12900456 has 24 divisors (see below), whose sum is σ = 34938930. Its totient is φ = 4300128.

The previous prime is 12900443. The next prime is 12900469. The reversal of 12900456 is 65400921.

It is an interprime number because it is at equal distance from previous prime (12900443) and next prime (12900469).

It can be written as a sum of positive squares in only one way, i.e., 7452900 + 5447556 = 2730^2 + 2334^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 89515 + ... + 89658.

Almost surely, 2^12900456 is an apocalyptic number.

It is an amenable number.

12900456 is an abundant number, since it is smaller than the sum of its proper divisors (22038474).

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

12900456 is a wasteful number, since it uses less digits than its factorization.

12900456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179185 (or 179178 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 12900456 is about 3591.7204791019. The cubic root of 12900456 is about 234.5317732977.

The spelling of 12900456 in words is "twelve million, nine hundred thousand, four hundred fifty-six".