12631572 has 24 divisors (see below), whose sum is σ = 32748800. Its totient is φ = 4210488.

The previous prime is 12631529. The next prime is 12631573. The reversal of 12631572 is 27513621.

It is a happy number.

It is a super-2 number, since 2×12631572² = 319113222382368, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12631573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58372 + ... + 58587.

Almost surely, 2^12631572 is an apocalyptic number.

12631572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12631572 is an abundant number, since it is smaller than the sum of its proper divisors (20117228).

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

12631572 is a wasteful number, since it uses less digits than its factorization.

12631572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116972 (or 116964 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 12631572 is about 3554.0922891788. The cubic root of 12631572 is about 232.8908721656.

It can be divided in two parts, 12631 and 572, that added together give a triangular number (13203 = T₁₆₂).

The spelling of 12631572 in words is "twelve million, six hundred thirty-one thousand, five hundred seventy-two".