13121696 has 24 divisors (see below), whose sum is σ = 29524320. Its totient is φ = 5623488.

The previous prime is 13121683. The next prime is 13121729. The reversal of 13121696 is 69612131.

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, 29066 + ... + 29513.

It is an arithmetic number, because the mean of its divisors is an integer number (1230180).

Almost surely, 2^13121696 is an apocalyptic number.

13121696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13121696 is an abundant number, since it is smaller than the sum of its proper divisors (16402624).

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

13121696 is an equidigital number, since it uses as much as digits as its factorization.

13121696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58596 (or 58588 counting only the distinct ones).

The product of its digits is 1944, while the sum is 29.

The square root of 13121696 is about 3622.3881625248. The cubic root of 13121696 is about 235.8649040075.

The spelling of 13121696 in words is "thirteen million, one hundred twenty-one thousand, six hundred ninety-six".