383993568 has 192 divisors, whose sum is σ = 1290885120. Its totient is φ = 108781056.

The previous prime is 383993567. The next prime is 383993581. The reversal of 383993568 is 865399383.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (383993563) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1046121 + ... + 1046487.

It is an arithmetic number, because the mean of its divisors is an integer number (6723360).

Almost surely, 2^383993568 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 383993568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (645442560).

383993568 is an abundant number, since it is smaller than the sum of its proper divisors (906891552).

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

383993568 is a wasteful number, since it uses less digits than its factorization.

383993568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566 (or 552 counting only the distinct ones).

The product of its digits is 4199040, while the sum is 54.

The square root of 383993568 is about 19595.7538257654. The cubic root of 383993568 is about 726.8441788742.

The spelling of 383993568 in words is "three hundred eighty-three million, nine hundred ninety-three thousand, five hundred sixty-eight".