13279812 has 48 divisors (see below), whose sum is σ = 38140032. Its totient is φ = 3502080.

The previous prime is 13279807. The next prime is 13279817. The reversal of 13279812 is 21897231.

It is an interprime number because it is at equal distance from previous prime (13279807) and next prime (13279817).

It is not an unprimeable number, because it can be changed into a prime (13279817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4989 + ... + 7172.

It is an arithmetic number, because the mean of its divisors is an integer number (794584).

Almost surely, 2^13279812 is an apocalyptic number.

13279812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13279812 is an abundant number, since it is smaller than the sum of its proper divisors (24860220).

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

13279812 is a wasteful number, since it uses less digits than its factorization.

13279812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12188 (or 12186 counting only the distinct ones).

The product of its digits is 6048, while the sum is 33.

The square root of 13279812 is about 3644.1476369653. The cubic root of 13279812 is about 236.8085120281.

The spelling of 13279812 in words is "thirteen million, two hundred seventy-nine thousand, eight hundred twelve".