18568000 has 112 divisors (see below), whose sum is σ = 50401728. Its totient is φ = 6720000.

The previous prime is 18567971. The next prime is 18568009. The reversal of 18568000 is 86581.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 18568000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18568009) 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, 87895 + ... + 88105.

Almost surely, 2^18568000 is an apocalyptic number.

18568000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18568000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25200864).

18568000 is an abundant number, since it is smaller than the sum of its proper divisors (31833728).

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

18568000 is a wasteful number, since it uses less digits than its factorization.

18568000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249 (or 229 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 18568000 is about 4309.0602223687. The cubic root of 18568000 is about 264.8022732955.

The spelling of 18568000 in words is "eighteen million, five hundred sixty-eight thousand".