20056576 has 40 divisors (see below), whose sum is σ = 41050944. Its totient is φ = 9784320.

The previous prime is 20056559. The next prime is 20056579. The reversal of 20056576 is 67565002.

It is not an unprimeable number, because it can be changed into a prime (20056579) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21561 + ... + 22471.

Almost surely, 2^20056576 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 20056576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20525472).

20056576 is an abundant number, since it is smaller than the sum of its proper divisors (20994368).

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

20056576 is an frugal number, since it uses more digits than its factorization.

20056576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 972 (or 956 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 20056576 is about 4478.4568770951. The cubic root of 20056576 is about 271.6974721780.

The spelling of 20056576 in words is "twenty million, fifty-six thousand, five hundred seventy-six".