12609824 has 24 divisors (see below), whose sum is σ = 24913980. Its totient is φ = 6282496.

The previous prime is 12609823. The next prime is 12609829. The reversal of 12609824 is 42890621.

It can be written as a sum of positive squares in 2 ways, for example, as 9610000 + 2999824 = 3100^2 + 1732^2 .

It is a super-2 number, since 2×12609824² = 318015322621952, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (12609823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11942 + ... + 12954.

Almost surely, 2^12609824 is an apocalyptic number.

It is an amenable number.

12609824 is a deficient number, since it is larger than the sum of its proper divisors (12304156).

12609824 is a wasteful number, since it uses less digits than its factorization.

12609824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1412 (or 1404 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 12609824 is about 3551.0313994669. The cubic root of 12609824 is about 232.7571379464.

The spelling of 12609824 in words is "twelve million, six hundred nine thousand, eight hundred twenty-four".