18524572 has 24 divisors (see below), whose sum is σ = 36191232. Its totient is φ = 8223600.

The previous prime is 18524567. The next prime is 18524573. The reversal of 18524572 is 27542581.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18524573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3004 + ... + 6787.

It is an arithmetic number, because the mean of its divisors is an integer number (1507968).

Almost surely, 2^18524572 is an apocalyptic number.

It is an amenable number.

18524572 is a deficient number, since it is larger than the sum of its proper divisors (17666660).

18524572 is a wasteful number, since it uses less digits than its factorization.

18524572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9849 (or 9847 counting only the distinct ones).

The product of its digits is 22400, while the sum is 34.

The square root of 18524572 is about 4304.0181226384. The cubic root of 18524572 is about 264.5956667627.

Subtracting 18524572 from its reverse (27542581), we obtain a square (9018009 = 3003²).

The spelling of 18524572 in words is "eighteen million, five hundred twenty-four thousand, five hundred seventy-two".