20822572 has 12 divisors (see below), whose sum is σ = 36480640. Its totient is φ = 10399536.

The previous prime is 20822563. The next prime is 20822573. The reversal of 20822572 is 27522802.

It is a self number, because there is not a number n which added to its sum of digits gives 20822572.

It is not an unprimeable number, because it can be changed into a prime (20822573) 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, 1954 + ... + 6742.

Almost surely, 2^20822572 is an apocalyptic number.

It is an amenable number.

20822572 is a deficient number, since it is larger than the sum of its proper divisors (15658068).

20822572 is a wasteful number, since it uses less digits than its factorization.

20822572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5880 (or 5878 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 20822572 is about 4563.1756486026. The cubic root of 20822572 is about 275.1132183950.

The spelling of 20822572 in words is "twenty million, eight hundred twenty-two thousand, five hundred seventy-two".