13216512 has 36 divisors (see below), whose sum is σ = 35177240. Its totient is φ = 4405248.

The previous prime is 13216507. The next prime is 13216519. The reversal of 13216512 is 21561231.

It is a super-2 number, since 2×13216512² = 349352378892288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13216519) 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, 7837 + ... + 9372.

Almost surely, 2^13216512 is an apocalyptic number.

13216512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13216512 is an abundant number, since it is smaller than the sum of its proper divisors (21960728).

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

13216512 is an equidigital number, since it uses as much as digits as its factorization.

13216512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17228 (or 17214 counting only the distinct ones).

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

The square root of 13216512 is about 3635.4521039343. The cubic root of 13216512 is about 236.4316527942.

Adding to 13216512 its reverse (21561231), we get a palindrome (34777743).

The spelling of 13216512 in words is "thirteen million, two hundred sixteen thousand, five hundred twelve".