18732572 has 24 divisors (see below), whose sum is σ = 35562240. Its totient is φ = 8599040.

The previous prime is 18732547. The next prime is 18732577. The reversal of 18732572 is 27523781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18732577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 572 + ... + 6147.

It is an arithmetic number, because the mean of its divisors is an integer number (1481760).

Almost surely, 2^18732572 is an apocalyptic number.

It is an amenable number.

18732572 is a deficient number, since it is larger than the sum of its proper divisors (16829668).

18732572 is a wasteful number, since it uses less digits than its factorization.

18732572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6781 (or 6779 counting only the distinct ones).

The product of its digits is 23520, while the sum is 35.

The square root of 18732572 is about 4328.1141389755. The cubic root of 18732572 is about 265.5823056086.

The spelling of 18732572 in words is "eighteen million, seven hundred thirty-two thousand, five hundred seventy-two".