12990624 has 24 divisors (see below), whose sum is σ = 34100640. Its totient is φ = 4330176.

The previous prime is 12990619. The next prime is 12990631. The reversal of 12990624 is 42609921.

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67564 + ... + 67755.

It is an arithmetic number, because the mean of its divisors is an integer number (1420860).

Almost surely, 2^12990624 is an apocalyptic number.

It is an amenable number.

12990624 is an abundant number, since it is smaller than the sum of its proper divisors (21110016).

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

12990624 is a wasteful number, since it uses less digits than its factorization.

12990624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135332 (or 135324 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 12990624 is about 3604.2508236803. The cubic root of 12990624 is about 235.0769266791.

The spelling of 12990624 in words is "twelve million, nine hundred ninety thousand, six hundred twenty-four".