18828385 has 16 divisors (see below), whose sum is σ = 23040000. Its totient is φ = 14769216.

The previous prime is 18828371. The next prime is 18828391. The reversal of 18828385 is 58382881.

It is a cyclic number.

It is not a de Polignac number, because 18828385 - 2⁵ = 18828353 is a prime.

Its product of digits (122880) is a multiple of the sum of its prime divisors (480).

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, 94516 + ... + 94714.

It is an arithmetic number, because the mean of its divisors is an integer number (1440000).

Almost surely, 2^18828385 is an apocalyptic number.

It is an amenable number.

18828385 is a deficient number, since it is larger than the sum of its proper divisors (4211615).

18828385 is a wasteful number, since it uses less digits than its factorization.

18828385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480.

The product of its digits is 122880, while the sum is 43.

The square root of 18828385 is about 4339.1686991865. The cubic root of 18828385 is about 266.0343342343.

The spelling of 18828385 in words is "eighteen million, eight hundred twenty-eight thousand, three hundred eighty-five".