13216464 has 30 divisors (see below), whose sum is σ = 36988146. Its totient is φ = 4405440.

The previous prime is 13216433. The next prime is 13216477. The reversal of 13216464 is 46461231.

13216464 is a `hidden beast` number, since 13 + 2 + 1 + 646 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 10188864 + 3027600 = 3192^2 + 1740^2 .

It is a nude number because it is divisible by every one of its digits.

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 in 5 ways as a sum of consecutive naturals, for example, 45747 + ... + 46034.

Almost surely, 2^13216464 is an apocalyptic number.

It is an amenable number.

13216464 is an abundant number, since it is smaller than the sum of its proper divisors (23771682).

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

13216464 is a wasteful number, since it uses less digits than its factorization.

13216464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91795 (or 91786 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 13216464 is about 3635.4455022734. The cubic root of 13216464 is about 236.4313665681.

Adding to 13216464 its reverse (46461231), we get a palindrome (59677695).

The spelling of 13216464 in words is "thirteen million, two hundred sixteen thousand, four hundred sixty-four".