18712568 has 64 divisors (see below), whose sum is σ = 43296000. Its totient is φ = 7402752.

The previous prime is 18712553. The next prime is 18712579. The reversal of 18712568 is 86521781.

It is a Harshad number since it is a multiple of its sum of digits (38).

Its product of digits (26880) is a multiple of the sum of its prime divisors (480).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45548 + ... + 45956.

It is an arithmetic number, because the mean of its divisors is an integer number (676500).

Almost surely, 2^18712568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18712568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21648000).

18712568 is an abundant number, since it is smaller than the sum of its proper divisors (24583432).

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

18712568 is a wasteful number, since it uses less digits than its factorization.

18712568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484 (or 480 counting only the distinct ones).

The product of its digits is 26880, while the sum is 38.

The square root of 18712568 is about 4325.8025844923. The cubic root of 18712568 is about 265.4877359172.

The spelling of 18712568 in words is "eighteen million, seven hundred twelve thousand, five hundred sixty-eight".