18885572 has 36 divisors (see below), whose sum is σ = 36284220. Its totient is φ = 8600640.

The previous prime is 18885569. The next prime is 18885613. The reversal of 18885572 is 27558881.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 10394176 + 8491396 = 3224^2 + 2914^2 .

Its product of digits (179200) is a multiple of the sum of its prime divisors (50).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 609197 + ... + 609227.

It is an arithmetic number, because the mean of its divisors is an integer number (1007895).

Almost surely, 2^18885572 is an apocalyptic number.

It is an amenable number.

18885572 is a deficient number, since it is larger than the sum of its proper divisors (17398648).

18885572 is an equidigital number, since it uses as much as digits as its factorization.

18885572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117 (or 50 counting only the distinct ones).

The product of its digits is 179200, while the sum is 44.

The square root of 18885572 is about 4345.7533294010. The cubic root of 18885572 is about 266.3034018976.

The spelling of 18885572 in words is "eighteen million, eight hundred eighty-five thousand, five hundred seventy-two".