18524012 has 24 divisors (see below), whose sum is σ = 36750000. Its totient is φ = 8099136.

The previous prime is 18523997. The next prime is 18524017. The reversal of 18524012 is 21042581.

It is a super-2 number, since 2×18524012² = 686278041152288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18524017) 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, 8387 + ... + 10362.

It is an arithmetic number, because the mean of its divisors is an integer number (1531250).

Almost surely, 2^18524012 is an apocalyptic number.

It is an amenable number.

18524012 is a deficient number, since it is larger than the sum of its proper divisors (18225988).

18524012 is a wasteful number, since it uses less digits than its factorization.

18524012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18785 (or 18783 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 18524012 is about 4303.9530666586. The cubic root of 18524012 is about 264.5930004831.

Adding to 18524012 its reverse (21042581), we get a palindrome (39566593).

Subtracting 18524012 from its reverse (21042581), we obtain a square (2518569 = 1587²).

The spelling of 18524012 in words is "eighteen million, five hundred twenty-four thousand, twelve".