13187472 has 20 divisors (see below), whose sum is σ = 34067760. Its totient is φ = 4395808.

The previous prime is 13187459. The next prime is 13187477. The reversal of 13187472 is 27478131.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (13187477) 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, 137322 + ... + 137417.

It is an arithmetic number, because the mean of its divisors is an integer number (1703388).

Almost surely, 2^13187472 is an apocalyptic number.

13187472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13187472 is an abundant number, since it is smaller than the sum of its proper divisors (20880288).

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

13187472 is a wasteful number, since it uses less digits than its factorization.

13187472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274750 (or 274744 counting only the distinct ones).

The product of its digits is 9408, while the sum is 33.

The square root of 13187472 is about 3631.4559063825. The cubic root of 13187472 is about 236.2583592126.

The spelling of 13187472 in words is "thirteen million, one hundred eighty-seven thousand, four hundred seventy-two".