18984372 has 24 divisors (see below), whose sum is σ = 48324192. Its totient is φ = 5752800.

The previous prime is 18984347. The next prime is 18984379. The reversal of 18984372 is 27348981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18984379) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71779 + ... + 72042.

It is an arithmetic number, because the mean of its divisors is an integer number (2013508).

Almost surely, 2^18984372 is an apocalyptic number.

18984372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18984372 is an abundant number, since it is smaller than the sum of its proper divisors (29339820).

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

18984372 is a wasteful number, since it uses less digits than its factorization.

18984372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143839 (or 143837 counting only the distinct ones).

The product of its digits is 96768, while the sum is 42.

The square root of 18984372 is about 4357.1059202181. The cubic root of 18984372 is about 266.7669837848.

The spelling of 18984372 in words is "eighteen million, nine hundred eighty-four thousand, three hundred seventy-two".