18574372 has 6 divisors (see below), whose sum is σ = 32505158. Its totient is φ = 9287184.

The previous prime is 18574357. The next prime is 18574393. The reversal of 18574372 is 27347581.

It can be written as a sum of positive squares in only one way, i.e., 17355556 + 1218816 = 4166^2 + 1104^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2321793 + ... + 2321800.

Almost surely, 2^18574372 is an apocalyptic number.

It is an amenable number.

18574372 is a deficient number, since it is larger than the sum of its proper divisors (13930786).

18574372 is a wasteful number, since it uses less digits than its factorization.

18574372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4643597 (or 4643595 counting only the distinct ones).

The product of its digits is 47040, while the sum is 37.

The square root of 18574372 is about 4309.7995313007. The cubic root of 18574372 is about 264.8325606556.

The spelling of 18574372 in words is "eighteen million, five hundred seventy-four thousand, three hundred seventy-two".