20820922 has 16 divisors (see below), whose sum is σ = 33069600. Its totient is φ = 9804240.

The previous prime is 20820889. The next prime is 20820929. The reversal of 20820922 is 22902802.

It is not an unprimeable number, because it can be changed into a prime (20820929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5272 + ... + 8332.

It is an arithmetic number, because the mean of its divisors is an integer number (2066850).

Almost surely, 2^20820922 is an apocalyptic number.

20820922 is a deficient number, since it is larger than the sum of its proper divisors (12248678).

20820922 is a wasteful number, since it uses less digits than its factorization.

20820922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3261.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 20820922 is about 4562.9948498766. The cubic root of 20820922 is about 275.1059514605.

The spelling of 20820922 in words is "twenty million, eight hundred twenty thousand, nine hundred twenty-two".