20220579 has 12 divisors (see below), whose sum is σ = 30745000. Its totient is φ = 12770784.

The previous prime is 20220517. The next prime is 20220581. The reversal of 20220579 is 97502202.

It is a happy number.

It is not a de Polignac number, because 20220579 - 2⁷ = 20220451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20220379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58954 + ... + 59295.

Almost surely, 2^20220579 is an apocalyptic number.

20220579 is a deficient number, since it is larger than the sum of its proper divisors (10524421).

20220579 is a wasteful number, since it uses less digits than its factorization.

20220579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118274 (or 118271 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 20220579 is about 4496.7298117632. The cubic root of 20220579 is about 272.4360212283.

The spelling of 20220579 in words is "twenty million, two hundred twenty thousand, five hundred seventy-nine".