13287572 has 12 divisors (see below), whose sum is σ = 23382996. Its totient is φ = 6606720.

The previous prime is 13287541. The next prime is 13287587. The reversal of 13287572 is 27578231.

It can be written as a sum of positive squares in 2 ways, for example, as 226576 + 13060996 = 476^2 + 3614^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8453 + ... + 9900.

It is an arithmetic number, because the mean of its divisors is an integer number (1948583).

Almost surely, 2^13287572 is an apocalyptic number.

It is an amenable number.

13287572 is a deficient number, since it is larger than the sum of its proper divisors (10095424).

13287572 is a wasteful number, since it uses less digits than its factorization.

13287572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18538 (or 18536 counting only the distinct ones).

The product of its digits is 23520, while the sum is 35.

The square root of 13287572 is about 3645.2122023279. The cubic root of 13287572 is about 236.8546290523.

The spelling of 13287572 in words is "thirteen million, two hundred eighty-seven thousand, five hundred seventy-two".