20220578 has 16 divisors (see below), whose sum is σ = 35471040. Its totient is φ = 8464176.

The previous prime is 20220517. The next prime is 20220581. The reversal of 20220578 is 87502202.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16193 + ... + 17396.

It is an arithmetic number, because the mean of its divisors is an integer number (2216940).

Almost surely, 2^20220578 is an apocalyptic number.

20220578 is a deficient number, since it is larger than the sum of its proper divisors (15250462).

20220578 is a wasteful number, since it uses less digits than its factorization.

20220578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33641.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 20220578 is about 4496.7297005713. The cubic root of 20220578 is about 272.4360167372.

The spelling of 20220578 in words is "twenty million, two hundred twenty thousand, five hundred seventy-eight".