18984472 has 32 divisors (see below), whose sum is σ = 38530800. Its totient is φ = 8717184.

The previous prime is 18984467. The next prime is 18984479. The reversal of 18984472 is 27448981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18984479) 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, 28479 + ... + 29137.

Almost surely, 2^18984472 is an apocalyptic number.

It is an amenable number.

18984472 is an abundant number, since it is smaller than the sum of its proper divisors (19546328).

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

18984472 is a wasteful number, since it uses less digits than its factorization.

18984472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955 (or 951 counting only the distinct ones).

The product of its digits is 129024, while the sum is 43.

The square root of 18984472 is about 4357.1173957102. The cubic root of 18984472 is about 266.7674521815.

The spelling of 18984472 in words is "eighteen million, nine hundred eighty-four thousand, four hundred seventy-two".