20520922 has 16 divisors (see below), whose sum is σ = 33229440. Its totient is φ = 9475312.

The previous prime is 20520901. The next prime is 20520937. The reversal of 20520922 is 22902502.

It is a super-2 number, since 2×20520922² = 842216479460168, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20520893 and 20520902.

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, 6358 + ... + 9025.

It is an arithmetic number, because the mean of its divisors is an integer number (2076840).

Almost surely, 2^20520922 is an apocalyptic number.

20520922 is a deficient number, since it is larger than the sum of its proper divisors (12708518).

20520922 is a wasteful number, since it uses less digits than its factorization.

20520922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15437.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 20520922 is about 4530.0024282554. The cubic root of 20520922 is about 273.7782584480.

Subtracting from 20520922 its sum of digits (22), we obtain a square (20520900 = 4530²).

The spelling of 20520922 in words is "twenty million, five hundred twenty thousand, nine hundred twenty-two".