12631256 has 16 divisors (see below), whose sum is σ = 25836840. Its totient is φ = 5741440.

The previous prime is 12631237. The next prime is 12631261. The reversal of 12631256 is 65213621.

12631256 = 881² + 882² + ... + 896².

It is a congruent number.

It is an unprimeable number.

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, 71681 + ... + 71856.

Almost surely, 2^12631256 is an apocalyptic number.

It is an amenable number.

12631256 is an abundant number, since it is smaller than the sum of its proper divisors (13205584).

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

12631256 is a wasteful number, since it uses less digits than its factorization.

12631256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143554 (or 143550 counting only the distinct ones).

The product of its digits is 2160, while the sum is 26.

The square root of 12631256 is about 3554.0478331052. The cubic root of 12631256 is about 232.8889300972. Note that the first 3 decimals are identical.

Adding to 12631256 its reverse (65213621), we get a palindrome (77844877).

The spelling of 12631256 in words is "twelve million, six hundred thirty-one thousand, two hundred fifty-six".