20568772 has 48 divisors (see below), whose sum is σ = 43263360. Its totient is φ = 8370432.

The previous prime is 20568763. The next prime is 20568787. The reversal of 20568772 is 27786502.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59103 + ... + 59449.

It is an arithmetic number, because the mean of its divisors is an integer number (901320).

Almost surely, 2^20568772 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 20568772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21631680).

20568772 is an abundant number, since it is smaller than the sum of its proper divisors (22694588).

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

20568772 is a wasteful number, since it uses less digits than its factorization.

20568772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460 (or 458 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 20568772 is about 4535.2808071827. The cubic root of 20568772 is about 273.9908889293.

The spelling of 20568772 in words is "twenty million, five hundred sixty-eight thousand, seven hundred seventy-two".