20892772 has 12 divisors (see below), whose sum is σ = 36715756. Its totient is φ = 10402560.

The previous prime is 20892757. The next prime is 20892857. The reversal of 20892772 is 27729802.

It can be written as a sum of positive squares in 2 ways, for example, as 18887716 + 2005056 = 4346^2 + 1416^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9873 + ... + 11800.

Almost surely, 2^20892772 is an apocalyptic number.

It is an amenable number.

20892772 is a deficient number, since it is larger than the sum of its proper divisors (15822984).

20892772 is a wasteful number, since it uses less digits than its factorization.

20892772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21918 (or 21916 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 20892772 is about 4570.8611880039. The cubic root of 20892772 is about 275.4220384738.

The spelling of 20892772 in words is "twenty million, eight hundred ninety-two thousand, seven hundred seventy-two".