13264440 has 64 divisors (see below), whose sum is σ = 45480960. Its totient is φ = 3031680.

The previous prime is 13264423. The next prime is 13264441. The reversal of 13264440 is 4446231.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 13264440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13264441) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 7056 + ... + 8735.

It is an arithmetic number, because the mean of its divisors is an integer number (710640).

Almost surely, 2^13264440 is an apocalyptic number.

13264440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13264440 is an abundant number, since it is smaller than the sum of its proper divisors (32216520).

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

13264440 is a wasteful number, since it uses less digits than its factorization.

13264440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15812 (or 15808 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 13264440 is about 3642.0378910714. The cubic root of 13264440 is about 236.7171044609.

The spelling of 13264440 in words is "thirteen million, two hundred sixty-four thousand, four hundred forty".