18293968 has 80 divisors (see below), whose sum is σ = 45711360. Its totient is φ = 6883200.

The previous prime is 18293939. The next prime is 18293971. The reversal of 18293968 is 86939281.

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, 37953 + ... + 38431.

It is an arithmetic number, because the mean of its divisors is an integer number (571392).

Almost surely, 2^18293968 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 18293968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22855680).

18293968 is an abundant number, since it is smaller than the sum of its proper divisors (27417392).

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

18293968 is a wasteful number, since it uses less digits than its factorization.

18293968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536 (or 530 counting only the distinct ones).

The product of its digits is 186624, while the sum is 46.

The square root of 18293968 is about 4277.1448420646. The cubic root of 18293968 is about 263.4931352157.

The spelling of 18293968 in words is "eighteen million, two hundred ninety-three thousand, nine hundred sixty-eight".