13279616 has 32 divisors (see below), whose sum is σ = 30236880. Its totient is φ = 5690880.

The previous prime is 13279589. The next prime is 13279619. The reversal of 13279616 is 61697231.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×13279616² = 352696402214912, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13279619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6515 + ... + 8306.

Almost surely, 2^13279616 is an apocalyptic number.

13279616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13279616 is an abundant number, since it is smaller than the sum of its proper divisors (16957264).

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

13279616 is an equidigital number, since it uses as much as digits as its factorization.

13279616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14842 (or 14830 counting only the distinct ones).

The product of its digits is 13608, while the sum is 35.

The square root of 13279616 is about 3644.1207444321. The cubic root of 13279616 is about 236.8073469841.

The spelling of 13279616 in words is "thirteen million, two hundred seventy-nine thousand, six hundred sixteen".