12531726 has 32 divisors (see below), whose sum is σ = 27993600. Its totient is φ = 4155480.

The previous prime is 12531709. The next prime is 12531763. The reversal of 12531726 is 62713521.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 12531726.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12421 + ... + 13391.

It is an arithmetic number, because the mean of its divisors is an integer number (874800).

Almost surely, 2^12531726 is an apocalyptic number.

12531726 is an abundant number, since it is smaller than the sum of its proper divisors (15461874).

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

12531726 is a wasteful number, since it uses less digits than its factorization.

12531726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1221 (or 1215 counting only the distinct ones).

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

The square root of 12531726 is about 3540.0177965654. The cubic root of 12531726 is about 232.2756211975.

The spelling of 12531726 in words is "twelve million, five hundred thirty-one thousand, seven hundred twenty-six".