12700056 has 32 divisors (see below), whose sum is σ = 33422400. Its totient is φ = 4010400.

The previous prime is 12700031. The next prime is 12700063. The reversal of 12700056 is 65000721.

It is a super-2 number, since 2×12700056² = 322582844806272, 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, 13470 + ... + 14381.

It is an arithmetic number, because the mean of its divisors is an integer number (1044450).

Almost surely, 2^12700056 is an apocalyptic number.

It is an amenable number.

12700056 is an abundant number, since it is smaller than the sum of its proper divisors (20722344).

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

12700056 is a wasteful number, since it uses less digits than its factorization.

12700056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27879 (or 27875 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 12700056 is about 3563.7137932219. The cubic root of 12700056 is about 233.3109983156.

Adding to 12700056 its reverse (65000721), we get a palindrome (77700777).

The spelling of 12700056 in words is "twelve million, seven hundred thousand, fifty-six".