18870764 has 48 divisors (see below), whose sum is σ = 38949120. Its totient is φ = 7909440.

The previous prime is 18870757. The next prime is 18870767. The reversal of 18870764 is 46707881.

It is a super-2 number, since 2×18870764² = 712211467887392, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18870767) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29027 + ... + 29669.

It is an arithmetic number, because the mean of its divisors is an integer number (811440).

Almost surely, 2^18870764 is an apocalyptic number.

It is an amenable number.

18870764 is an abundant number, since it is smaller than the sum of its proper divisors (20078356).

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

18870764 is a wasteful number, since it uses less digits than its factorization.

18870764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710 (or 708 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 41.

The square root of 18870764 is about 4344.0492630724. The cubic root of 18870764 is about 266.2337816978.

The spelling of 18870764 in words is "eighteen million, eight hundred seventy thousand, seven hundred sixty-four".