12531824 has 20 divisors (see below), whose sum is σ = 24347400. Its totient is φ = 6248640.

The previous prime is 12531809. The next prime is 12531829. The reversal of 12531824 is 42813521.

It is a super-2 number, since 2×12531824² = 314093225533952, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12531793 and 12531802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12531829) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 6527 + ... + 8225.

It is an arithmetic number, because the mean of its divisors is an integer number (1217370).

Almost surely, 2^12531824 is an apocalyptic number.

It is an amenable number.

12531824 is a deficient number, since it is larger than the sum of its proper divisors (11815576).

12531824 is a wasteful number, since it uses less digits than its factorization.

12531824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2168 (or 2162 counting only the distinct ones).

The product of its digits is 1920, while the sum is 26.

The square root of 12531824 is about 3540.0316382767. The cubic root of 12531824 is about 232.2762266728.

The spelling of 12531824 in words is "twelve million, five hundred thirty-one thousand, eight hundred twenty-four".