18857372 has 12 divisors (see below), whose sum is σ = 33046776. Its totient is φ = 9415440.

The previous prime is 18857353. The next prime is 18857381. The reversal of 18857372 is 27375881.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 338 + ... + 6150.

It is an arithmetic number, because the mean of its divisors is an integer number (2753898).

Almost surely, 2^18857372 is an apocalyptic number.

It is an amenable number.

18857372 is a deficient number, since it is larger than the sum of its proper divisors (14189404).

18857372 is a wasteful number, since it uses less digits than its factorization.

18857372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6628 (or 6626 counting only the distinct ones).

The product of its digits is 94080, while the sum is 41.

The square root of 18857372 is about 4342.5075705173. The cubic root of 18857372 is about 266.1707874888.

The spelling of 18857372 in words is "eighteen million, eight hundred fifty-seven thousand, three hundred seventy-two".