18934120 has 16 divisors (see below), whose sum is σ = 42601860. Its totient is φ = 7573632.

The previous prime is 18934117. The next prime is 18934177. The reversal of 18934120 is 2143981.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 17089956 + 1844164 = 4134^2 + 1358^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 236637 + ... + 236716.

Almost surely, 2^18934120 is an apocalyptic number.

18934120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18934120 is an abundant number, since it is smaller than the sum of its proper divisors (23667740).

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

18934120 is a wasteful number, since it uses less digits than its factorization.

18934120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473364 (or 473360 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 18934120 is about 4351.3354271993. The cubic root of 18934120 is about 266.5313966720.

It can be divided in two parts, 1 and 8934120, that added together give a square (8934121 = 2989²).

The spelling of 18934120 in words is "eighteen million, nine hundred thirty-four thousand, one hundred twenty".