18576642 has 32 divisors (see below), whose sum is σ = 44697600. Its totient is φ = 5028048.

The previous prime is 18576641. The next prime is 18576647. The reversal of 18576642 is 24667581.

It is a self number, because there is not a number n which added to its sum of digits gives 18576642.

It is not an unprimeable number, because it can be changed into a prime (18576641) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 10842 + ... + 12437.

It is an arithmetic number, because the mean of its divisors is an integer number (1396800).

Almost surely, 2^18576642 is an apocalyptic number.

18576642 is an abundant number, since it is smaller than the sum of its proper divisors (26120958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18576642 is a wasteful number, since it uses less digits than its factorization.

18576642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23310.

The product of its digits is 80640, while the sum is 39.

The square root of 18576642 is about 4310.0628765715. The cubic root of 18576642 is about 264.8433487355.

The spelling of 18576642 in words is "eighteen million, five hundred seventy-six thousand, six hundred forty-two".