13216976 has 10 divisors (see below), whose sum is σ = 25607922. Its totient is φ = 6608480.

The previous prime is 13216969. The next prime is 13216991. The reversal of 13216976 is 67961231.

It can be written as a sum of positive squares in only one way, i.e., 9120400 + 4096576 = 3020^2 + 2024^2 .

It is a congruent number.

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 as a sum of consecutive naturals, namely, 413015 + ... + 413046.

Almost surely, 2^13216976 is an apocalyptic number.

13216976 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13216976 is a deficient number, since it is larger than the sum of its proper divisors (12390946).

13216976 is an equidigital number, since it uses as much as digits as its factorization.

13216976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 826069 (or 826063 counting only the distinct ones).

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

The square root of 13216976 is about 3635.5159193710. The cubic root of 13216976 is about 236.4344196111.

The spelling of 13216976 in words is "thirteen million, two hundred sixteen thousand, nine hundred seventy-six".