20833928 has 16 divisors (see below), whose sum is σ = 39234780. Its totient is φ = 10371328.

The previous prime is 20833927. The next prime is 20833931. The reversal of 20833928 is 82933802.

It can be written as a sum of positive squares in 2 ways, for example, as 20775364 + 58564 = 4558^2 + 242^2 .

It is not an unprimeable number, because it can be changed into a prime (20833927) by changing a digit.

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, 3725 + ... + 7452.

Almost surely, 2^20833928 is an apocalyptic number.

It is an amenable number.

20833928 is a deficient number, since it is larger than the sum of its proper divisors (18400852).

20833928 is a wasteful number, since it uses less digits than its factorization.

20833928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11416 (or 11412 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 20833928 is about 4564.4197878810. The cubic root of 20833928 is about 275.1632221111.

The spelling of 20833928 in words is "twenty million, eight hundred thirty-three thousand, nine hundred twenty-eight".