18872064 has 54 divisors (see below), whose sum is σ = 54419456. Its totient is φ = 6289920.

The previous prime is 18872059. The next prime is 18872071. The reversal of 18872064 is 46027881.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 1792 + ... + 6399.

Almost surely, 2^18872064 is an apocalyptic number.

It is an amenable number.

18872064 is an abundant number, since it is smaller than the sum of its proper divisors (35547392).

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

18872064 is an equidigital number, since it uses as much as digits as its factorization.

18872064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8213 (or 8196 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 18872064 is about 4344.1988904745. The cubic root of 18872064 is about 266.2398951399.

The spelling of 18872064 in words is "eighteen million, eight hundred seventy-two thousand, sixty-four".