20925104 has 20 divisors (see below), whose sum is σ = 40726560. Its totient is φ = 10415040.

The previous prime is 20925053. The next prime is 20925119. The reversal of 20925104 is 40152902.

It is a self number, because there is not a number n which added to its sum of digits gives 20925104.

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, 809 + ... + 6519.

It is an arithmetic number, because the mean of its divisors is an integer number (2036328).

Almost surely, 2^20925104 is an apocalyptic number.

It is an amenable number.

20925104 is a deficient number, since it is larger than the sum of its proper divisors (19801456).

20925104 is a wasteful number, since it uses less digits than its factorization.

20925104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5948 (or 5942 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 20925104 is about 4574.3965722268. The cubic root of 20925104 is about 275.5640390305.

The spelling of 20925104 in words is "twenty million, nine hundred twenty-five thousand, one hundred four".