18736572 has 24 divisors (see below), whose sum is σ = 43792000. Its totient is φ = 6235056.

The previous prime is 18736561. The next prime is 18736573. The reversal of 18736572 is 27563781.

It is a super-2 number, since 2×18736572² = 702118260622368, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18736572.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18736573) 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, 10179 + ... + 11877.

Almost surely, 2^18736572 is an apocalyptic number.

18736572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18736572 is an abundant number, since it is smaller than the sum of its proper divisors (25055428).

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

18736572 is a wasteful number, since it uses less digits than its factorization.

18736572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2625 (or 2623 counting only the distinct ones).

The product of its digits is 70560, while the sum is 39.

The square root of 18736572 is about 4328.5762093326. The cubic root of 18736572 is about 265.6012076867.

The spelling of 18736572 in words is "eighteen million, seven hundred thirty-six thousand, five hundred seventy-two".