12631590 has 24 divisors (see below), whose sum is σ = 32842368. Its totient is φ = 3368400.

The previous prime is 12631589. The next prime is 12631607. The reversal of 12631590 is 9513621.

12631590 is a `hidden beast` number, since 12 + 63 + 1 + 590 = 666.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

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 11 ways as a sum of consecutive naturals, for example, 70086 + ... + 70265.

It is an arithmetic number, because the mean of its divisors is an integer number (1368432).

Almost surely, 2^12631590 is an apocalyptic number.

12631590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12631590 is an abundant number, since it is smaller than the sum of its proper divisors (20210778).

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

12631590 is a wasteful number, since it uses less digits than its factorization.

12631590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140364 (or 140361 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 12631590 is about 3554.0948214700. The cubic root of 12631590 is about 232.8909827887.

The spelling of 12631590 in words is "twelve million, six hundred thirty-one thousand, five hundred ninety".