13187272 has 24 divisors (see below), whose sum is σ = 28763910. Its totient is φ = 5651520.

The previous prime is 13187263. The next prime is 13187309. The reversal of 13187272 is 27278131.

It can be written as a sum of positive squares in only one way, i.e., 9400356 + 3786916 = 3066^2 + 1946^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16429 + ... + 17212.

Almost surely, 2^13187272 is an apocalyptic number.

It is an amenable number.

13187272 is an abundant number, since it is smaller than the sum of its proper divisors (15576638).

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

13187272 is a wasteful number, since it uses less digits than its factorization.

13187272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33661 (or 33650 counting only the distinct ones).

The product of its digits is 4704, while the sum is 31.

The square root of 13187272 is about 3631.4283691132. The cubic root of 13187272 is about 236.2571648490.

The spelling of 13187272 in words is "thirteen million, one hundred eighty-seven thousand, two hundred seventy-two".