18572490 has 48 divisors (see below), whose sum is σ = 50083488. Its totient is φ = 4952016.

The previous prime is 18572479. The next prime is 18572497. The reversal of 18572490 is 9427581.

It is not an unprimeable number, because it can be changed into a prime (18572497) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1392 + ... + 6251.

It is an arithmetic number, because the mean of its divisors is an integer number (1043406).

Almost surely, 2^18572490 is an apocalyptic number.

18572490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18572490 is an abundant number, since it is smaller than the sum of its proper divisors (31510998).

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

18572490 is an equidigital number, since it uses as much as digits as its factorization.

18572490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7665 (or 7653 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 18572490 is about 4309.5811861479. The cubic root of 18572490 is about 264.8236158631.

The spelling of 18572490 in words is "eighteen million, five hundred seventy-two thousand, four hundred ninety".