18272160 has 72 divisors (see below), whose sum is σ = 62358660. Its totient is φ = 4872192.

The previous prime is 18272159. The next prime is 18272179. The reversal of 18272160 is 6127281.

It can be written as a sum of positive squares in 2 ways, for example, as 16744464 + 1527696 = 4092^2 + 1236^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4905 + ... + 7784.

Almost surely, 2^18272160 is an apocalyptic number.

18272160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18272160 is an abundant number, since it is smaller than the sum of its proper divisors (44086500).

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

18272160 is a wasteful number, since it uses less digits than its factorization.

18272160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12710 (or 12699 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 18272160 is about 4274.5947176311. The cubic root of 18272160 is about 263.3883913433.

The spelling of 18272160 in words is "eighteen million, two hundred seventy-two thousand, one hundred sixty".