56993868 has 60 divisors (see below), whose sum is σ = 151850160. Its totient is φ = 18633888.

The previous prime is 56993831. The next prime is 56993899. The reversal of 56993868 is 86839965.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 15513 + ... + 18831.

It is an arithmetic number, because the mean of its divisors is an integer number (2530836).

Almost surely, 2^56993868 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 56993868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75925080).

56993868 is an abundant number, since it is smaller than the sum of its proper divisors (94856292).

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

56993868 is a wasteful number, since it uses less digits than its factorization.

56993868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3388 (or 3377 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 54.

The square root of 56993868 is about 7549.4283227275. The cubic root of 56993868 is about 384.8363120427.

The spelling of 56993868 in words is "fifty-six million, nine hundred ninety-three thousand, eight hundred sixty-eight".