20004879 has 16 divisors (see below), whose sum is σ = 27181440. Its totient is φ = 13085280.

The previous prime is 20004851. The next prime is 20004883. The reversal of 20004879 is 97840002.

It is not a de Polignac number, because 20004879 - 2⁹ = 20004367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20004979) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42604 + ... + 43070.

It is an arithmetic number, because the mean of its divisors is an integer number (1698840).

Almost surely, 2^20004879 is an apocalyptic number.

20004879 is a deficient number, since it is larger than the sum of its proper divisors (7176561).

20004879 is a wasteful number, since it uses less digits than its factorization.

20004879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 20004879 is about 4472.6814105188. The cubic root of 20004879 is about 271.4638326041.

The spelling of 20004879 in words is "twenty million, four thousand, eight hundred seventy-nine".