18076320 has 72 divisors (see below), whose sum is σ = 61690356. Its totient is φ = 4819968.

The previous prime is 18076319. The next prime is 18076327. The reversal of 18076320 is 2367081.

It can be written as a sum of positive squares in 2 ways, for example, as 16548624 + 1527696 = 4068^2 + 1236^2 .

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

It is not an unprimeable number, because it can be changed into a prime (18076327) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4837 + ... + 7716.

Almost surely, 2^18076320 is an apocalyptic number.

18076320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18076320 is an abundant number, since it is smaller than the sum of its proper divisors (43614036).

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

18076320 is a wasteful number, since it uses less digits than its factorization.

18076320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12574 (or 12563 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 18076320 is about 4251.6255714726. The cubic root of 18076320 is about 262.4440152716. Note that the first 3 decimals are identical.

The spelling of 18076320 in words is "eighteen million, seventy-six thousand, three hundred twenty".