13872170 has 32 divisors (see below), whose sum is σ = 28477008. Its totient is φ = 4819968.

The previous prime is 13872169. The next prime is 13872181. The reversal of 13872170 is 7127831.

13872170 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 9616201 + 4255969 = 3101^2 + 2063^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 929 + ... + 5348.

Almost surely, 2^13872170 is an apocalyptic number.

13872170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13872170 is an abundant number, since it is smaller than the sum of its proper divisors (14604838).

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

13872170 is a wasteful number, since it uses less digits than its factorization.

13872170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6314.

The product of its (nonzero) digits is 2352, while the sum is 29.

The square root of 13872170 is about 3724.5362127384. The cubic root of 13872170 is about 240.2784384160.

The spelling of 13872170 in words is "thirteen million, eight hundred seventy-two thousand, one hundred seventy".