20924804 has 12 divisors (see below), whose sum is σ = 36680028. Its totient is φ = 10444800.

The previous prime is 20924797. The next prime is 20924821. The reversal of 20924804 is 40842902.

It can be written as a sum of positive squares in 2 ways, for example, as 13912900 + 7011904 = 3730^2 + 2648^2 .

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1517 + ... + 6644.

It is an arithmetic number, because the mean of its divisors is an integer number (3056669).

Almost surely, 2^20924804 is an apocalyptic number.

It is an amenable number.

20924804 is a deficient number, since it is larger than the sum of its proper divisors (15755224).

20924804 is a wasteful number, since it uses less digits than its factorization.

20924804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8806 (or 8804 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 20924804 is about 4574.3637808989. The cubic root of 20924804 is about 275.5627221177.

The spelling of 20924804 in words is "twenty million, nine hundred twenty-four thousand, eight hundred four".