13280864 has 24 divisors (see below), whose sum is σ = 26308800. Its totient is φ = 6599296.

The previous prime is 13280863. The next prime is 13280873. The reversal of 13280864 is 46808231.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a plaindrome in base 13.

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 13280864.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13280863) 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, 4337 + ... + 6735.

It is an arithmetic number, because the mean of its divisors is an integer number (1096200).

Almost surely, 2^13280864 is an apocalyptic number.

It is an amenable number.

13280864 is a deficient number, since it is larger than the sum of its proper divisors (13027936).

13280864 is a wasteful number, since it uses less digits than its factorization.

13280864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2582 (or 2574 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 13280864 is about 3644.2919751304. The cubic root of 13280864 is about 236.8147650277.

The spelling of 13280864 in words is "thirteen million, two hundred eighty thousand, eight hundred sixty-four".