20330568 has 64 divisors (see below), whose sum is σ = 57436800. Its totient is φ = 6661440.

The previous prime is 20330567. The next prime is 20330581. The reversal of 20330568 is 86503302.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (20330567) 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, 12405 + ... + 13947.

It is an arithmetic number, because the mean of its divisors is an integer number (897450).

Almost surely, 2^20330568 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 20330568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28718400).

20330568 is an abundant number, since it is smaller than the sum of its proper divisors (37106232).

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

20330568 is a wasteful number, since it uses less digits than its factorization.

20330568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1619 (or 1609 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 20330568 is about 4508.9431134136. The cubic root of 20330568 is about 272.9290964277.

The spelling of 20330568 in words is "twenty million, three hundred thirty thousand, five hundred sixty-eight".