18765572 has 12 divisors (see below), whose sum is σ = 37531200. Its totient is φ = 8042376.

The previous prime is 18765557. The next prime is 18765589. The reversal of 18765572 is 27556781.

18765572 is an admirable number.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 335072 + ... + 335127.

It is an arithmetic number, because the mean of its divisors is an integer number (3127600).

Almost surely, 2^18765572 is an apocalyptic number.

It is an amenable number.

18765572 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18765572 is a wasteful number, since it uses less digits than its factorization.

18765572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670210 (or 670208 counting only the distinct ones).

The product of its digits is 117600, while the sum is 41.

The square root of 18765572 is about 4331.9247454221. The cubic root of 18765572 is about 265.7381673639.

The spelling of 18765572 in words is "eighteen million, seven hundred sixty-five thousand, five hundred seventy-two".