12518816 has 24 divisors (see below), whose sum is σ = 25018560. Its totient is φ = 6164928.

The previous prime is 12518801. The next prime is 12518837. The reversal of 12518816 is 61881521.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 776 + ... + 5063.

It is an arithmetic number, because the mean of its divisors is an integer number (1042440).

Almost surely, 2^12518816 is an apocalyptic number.

12518816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12518816 is a deficient number, since it is larger than the sum of its proper divisors (12499744).

12518816 is an equidigital number, since it uses as much as digits as its factorization.

12518816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5916 (or 5908 counting only the distinct ones).

The product of its digits is 3840, while the sum is 32.

The square root of 12518816 is about 3538.1938895431. The cubic root of 12518816 is about 232.1958314811.

The spelling of 12518816 in words is "twelve million, five hundred eighteen thousand, eight hundred sixteen".