13216576 has 28 divisors (see below), whose sum is σ = 27134820. Its totient is φ = 6379520.

The previous prime is 13216561. The next prime is 13216583. The reversal of 13216576 is 67561231.

It can be written as a sum of positive squares in 2 ways, for example, as 2822400 + 10394176 = 1680^2 + 3224^2 .

It is a congruent number.

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, 1705 + ... + 5416.

Almost surely, 2^13216576 is an apocalyptic number.

13216576 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13216576 is an abundant number, since it is smaller than the sum of its proper divisors (13918244).

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

13216576 is an equidigital number, since it uses as much as digits as its factorization.

13216576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7162 (or 7152 counting only the distinct ones).

The product of its digits is 7560, while the sum is 31.

The square root of 13216576 is about 3635.4609061301. The cubic root of 13216576 is about 236.4320344280.

The spelling of 13216576 in words is "thirteen million, two hundred sixteen thousand, five hundred seventy-six".