18572368 has 20 divisors (see below), whose sum is σ = 36479188. Its totient is φ = 9158400.

The previous prime is 18572363. The next prime is 18572371. The reversal of 18572368 is 86327581.

It can be written as a sum of positive squares in 2 ways, for example, as 15776784 + 2795584 = 3972^2 + 1672^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 18572368.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18572363) 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, 6783 + ... + 9118.

Almost surely, 2^18572368 is an apocalyptic number.

It is an amenable number.

18572368 is a deficient number, since it is larger than the sum of its proper divisors (17906820).

18572368 is a wasteful number, since it uses less digits than its factorization.

18572368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15982 (or 15976 counting only the distinct ones).

The product of its digits is 80640, while the sum is 40.

The square root of 18572368 is about 4309.5670316170. The cubic root of 18572368 is about 264.8230359991.

It can be divided in two parts, 1857 and 2368, that added together give a square (4225 = 65²).

The spelling of 18572368 in words is "eighteen million, five hundred seventy-two thousand, three hundred sixty-eight".