12999744 has 56 divisors (see below), whose sum is σ = 38221920. Its totient is φ = 4332672.

The previous prime is 12999737. The next prime is 12999797. The reversal of 12999744 is 44799921.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12999744.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2034 + ... + 5489.

Almost surely, 2^12999744 is an apocalyptic number.

It is an amenable number.

12999744 is an abundant number, since it is smaller than the sum of its proper divisors (25222176).

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

12999744 is an equidigital number, since it uses as much as digits as its factorization.

12999744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7544 (or 7528 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 12999744 is about 3605.5157744767. The cubic root of 12999744 is about 235.1319253217.

The spelling of 12999744 in words is "twelve million, nine hundred ninety-nine thousand, seven hundred forty-four".