13572644 has 12 divisors (see below), whose sum is σ = 24087168. Its totient is φ = 6690600.

The previous prime is 13572623. The next prime is 13572661. The reversal of 13572644 is 44627531.

It is a self number, because there is not a number n which added to its sum of digits gives 13572644.

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 3 ways as a sum of consecutive naturals, for example, 23612 + ... + 24179.

It is an arithmetic number, because the mean of its divisors is an integer number (2007264).

Almost surely, 2^13572644 is an apocalyptic number.

It is an amenable number.

13572644 is a deficient number, since it is larger than the sum of its proper divisors (10514524).

13572644 is a wasteful number, since it uses less digits than its factorization.

13572644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47866 (or 47864 counting only the distinct ones).

The product of its digits is 20160, while the sum is 32.

The square root of 13572644 is about 3684.1069474162. The cubic root of 13572644 is about 238.5364872017.

The spelling of 13572644 in words is "thirteen million, five hundred seventy-two thousand, six hundred forty-four".