18554572 has 24 divisors (see below), whose sum is σ = 33384960. Its totient is φ = 9019920.

The previous prime is 18554563. The next prime is 18554579. The reversal of 18554572 is 27545581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18554579) 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, 22023 + ... + 22849.

It is an arithmetic number, because the mean of its divisors is an integer number (1391040).

Almost surely, 2^18554572 is an apocalyptic number.

It is an amenable number.

18554572 is a deficient number, since it is larger than the sum of its proper divisors (14830388).

18554572 is a wasteful number, since it uses less digits than its factorization.

18554572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981 (or 979 counting only the distinct ones).

The product of its digits is 56000, while the sum is 37.

The square root of 18554572 is about 4307.5018282062. The cubic root of 18554572 is about 264.7384246954.

The spelling of 18554572 in words is "eighteen million, five hundred fifty-four thousand, five hundred seventy-two".