20464804 has 12 divisors (see below), whose sum is σ = 37920204. Its totient is φ = 9630464.

The previous prime is 20464789. The next prime is 20464817. The reversal of 20464804 is 40846402.

It can be written as a sum of positive squares in 2 ways, for example, as 13704804 + 6760000 = 3702^2 + 2600^2 .

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, 150409 + ... + 150544.

It is an arithmetic number, because the mean of its divisors is an integer number (3160017).

Almost surely, 2^20464804 is an apocalyptic number.

It is an amenable number.

20464804 is a deficient number, since it is larger than the sum of its proper divisors (17455400).

20464804 is a wasteful number, since it uses less digits than its factorization.

20464804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300974 (or 300972 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

The square root of 20464804 is about 4523.8041513753. The cubic root of 20464804 is about 273.5284659892.

The spelling of 20464804 in words is "twenty million, four hundred sixty-four thousand, eight hundred four".