18045120 has 56 divisors (see below), whose sum is σ = 57296304. Its totient is φ = 4811776.

The previous prime is 18045067. The next prime is 18045173. The reversal of 18045120 is 2154081.

It is an interprime number because it is at equal distance from previous prime (18045067) and next prime (18045173).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8439 + ... + 10358.

Almost surely, 2^18045120 is an apocalyptic number.

18045120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18045120 is an abundant number, since it is smaller than the sum of its proper divisors (39251184).

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

18045120 is a wasteful number, since it uses less digits than its factorization.

18045120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18817 (or 18807 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 18045120 is about 4247.9548020194. The cubic root of 18045120 is about 262.2929342106.

The spelling of 18045120 in words is "eighteen million, forty-five thousand, one hundred twenty".