18900084 has 36 divisors (see below), whose sum is σ = 51301824. Its totient is φ = 5399856.

The previous prime is 18900071. The next prime is 18900103. The reversal of 18900084 is 48000981.

It is a happy number.

It is a congruent number.

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, 15484 + ... + 16659.

Almost surely, 2^18900084 is an apocalyptic number.

18900084 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18900084 is an abundant number, since it is smaller than the sum of its proper divisors (32401740).

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

18900084 is a wasteful number, since it uses less digits than its factorization.

18900084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32164 (or 32155 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 18900084 is about 4347.4226847639. The cubic root of 18900084 is about 266.3715951462.

The spelling of 18900084 in words is "eighteen million, nine hundred thousand, eighty-four".