12999232 has 28 divisors (see below), whose sum is σ = 26919936. Its totient is φ = 6216320.

The previous prime is 12999223. The next prime is 12999241. The reversal of 12999232 is 23299921.

It is an interprime number because it is at equal distance from previous prime (12999223) and next prime (12999241).

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 12999191 and 12999200.

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, 2944 + ... + 5887.

Almost surely, 2^12999232 is an apocalyptic number.

12999232 is the 2944-th pentagonal number.

It is an amenable number.

12999232 is an abundant number, since it is smaller than the sum of its proper divisors (13920704).

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

12999232 is an equidigital number, since it uses as much as digits as its factorization.

12999232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8866 (or 8856 counting only the distinct ones).

The product of its digits is 17496, while the sum is 37.

The square root of 12999232 is about 3605.4447714533. Note that the first 3 decimals coincide. The cubic root of 12999232 is about 235.1288383603.

It can be divided in two parts, 12999 and 232, that added together give a palindrome (13231).

The spelling of 12999232 in words is "twelve million, nine hundred ninety-nine thousand, two hundred thirty-two".