18785472 has 28 divisors (see below), whose sum is σ = 49703736. Its totient is φ = 6261760.

The previous prime is 18785467. The next prime is 18785567. The reversal of 18785472 is 27458781.

It is an alternating number because its digits alternate between odd and even.

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, 48729 + ... + 49112.

Almost surely, 2^18785472 is an apocalyptic number.

18785472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18785472 is an abundant number, since it is smaller than the sum of its proper divisors (30918264).

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

18785472 is an equidigital number, since it uses as much as digits as its factorization.

18785472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97856 (or 97846 counting only the distinct ones).

The product of its digits is 125440, while the sum is 42.

The square root of 18785472 is about 4334.2210372799. The cubic root of 18785472 is about 265.8320684245.

The spelling of 18785472 in words is "eighteen million, seven hundred eighty-five thousand, four hundred seventy-two".