15799812 has 48 divisors (see below), whose sum is σ = 42362880. Its totient is φ = 4489632.

The previous prime is 15799807. The next prime is 15799829. The reversal of 15799812 is 21899751.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19683 + ... + 20469.

It is an arithmetic number, because the mean of its divisors is an integer number (882560).

Almost surely, 2^15799812 is an apocalyptic number.

15799812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15799812 is an abundant number, since it is smaller than the sum of its proper divisors (26563068).

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

15799812 is a wasteful number, since it uses less digits than its factorization.

15799812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040 (or 1038 counting only the distinct ones).

The product of its digits is 45360, while the sum is 42.

The square root of 15799812 is about 3974.8977345336. The cubic root of 15799812 is about 250.9288751561.

The spelling of 15799812 in words is "fifteen million, seven hundred ninety-nine thousand, eight hundred twelve".