18933472 has 24 divisors (see below), whose sum is σ = 38187072. Its totient is φ = 9235200.

The previous prime is 18933469. The next prime is 18933479. The reversal of 18933472 is 27433981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18933479) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5904 + ... + 8527.

It is an arithmetic number, because the mean of its divisors is an integer number (1591128).

Almost surely, 2^18933472 is an apocalyptic number.

It is an amenable number.

18933472 is an abundant number, since it is smaller than the sum of its proper divisors (19253600).

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

18933472 is a wasteful number, since it uses less digits than its factorization.

18933472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14482 (or 14474 counting only the distinct ones).

The product of its digits is 36288, while the sum is 37.

The square root of 18933472 is about 4351.2609666624. The cubic root of 18933472 is about 266.5283560533.

The spelling of 18933472 in words is "eighteen million, nine hundred thirty-three thousand, four hundred seventy-two".