20804926 has 16 divisors (see below), whose sum is σ = 33260544. Its totient is φ = 9737464.

The previous prime is 20804911. The next prime is 20804929. The reversal of 20804926 is 62940802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20804929) 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, 2650 + ... + 6973.

It is an arithmetic number, because the mean of its divisors is an integer number (2078784).

Almost surely, 2^20804926 is an apocalyptic number.

20804926 is a deficient number, since it is larger than the sum of its proper divisors (12455618).

20804926 is a wasteful number, since it uses less digits than its factorization.

20804926 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9695.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 20804926 is about 4561.2417169012. The cubic root of 20804926 is about 275.0354819231.

The spelling of 20804926 in words is "twenty million, eight hundred four thousand, nine hundred twenty-six".