13251216 has 40 divisors (see below), whose sum is σ = 37345824. Its totient is φ = 4015360.

The previous prime is 13251169. The next prime is 13251233. The reversal of 13251216 is 61215231.

It is a junction number, because it is equal to n+sod(n) for n = 13251192 and 13251201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12021 + ... + 13076.

Almost surely, 2^13251216 is an apocalyptic number.

13251216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13251216 is an abundant number, since it is smaller than the sum of its proper divisors (24094608).

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

13251216 is a wasteful number, since it uses less digits than its factorization.

13251216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25119 (or 25113 counting only the distinct ones).

The product of its digits is 360, while the sum is 21.

The square root of 13251216 is about 3640.2219712540. The cubic root of 13251216 is about 236.6384131671.

Adding to 13251216 its reverse (61215231), we get a palindrome (74466447).

The spelling of 13251216 in words is "thirteen million, two hundred fifty-one thousand, two hundred sixteen".