12631528 has 32 divisors (see below), whose sum is σ = 29151360. Its totient is φ = 4996800.

The previous prime is 12631519. The next prime is 12631529. The reversal of 12631528 is 82513621.

12631528 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12631528² = 319110999229568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 12631496 and 12631505.

It is not an unprimeable number, because it can be changed into a prime (12631529) 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, 7948 + ... + 9403.

It is an arithmetic number, because the mean of its divisors is an integer number (910980).

Almost surely, 2^12631528 is an apocalyptic number.

It is an amenable number.

12631528 is an abundant number, since it is smaller than the sum of its proper divisors (16519832).

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

12631528 is a wasteful number, since it uses less digits than its factorization.

12631528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17377 (or 17373 counting only the distinct ones).

The product of its digits is 2880, while the sum is 28.

The square root of 12631528 is about 3554.0860991259. The cubic root of 12631528 is about 232.8906017529.

The spelling of 12631528 in words is "twelve million, six hundred thirty-one thousand, five hundred twenty-eight".