20204828604 has 18 divisors (see below), whose sum is σ = 51073316840. Its totient is φ = 6734942856.

The previous prime is 20204828587. The next prime is 20204828647. The reversal of 20204828604 is 40682840202.

It is a happy number.

20204828604 is a `hidden beast` number, since 2 + 0 + 2 + 0 + 48 + 2 + 8 + 604 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 561245239 = 20204828604 / (2 + 0 + 2 + 0 + 4 + 8 + 2 + 8 + 6 + 0 + 4).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 280622584 + ... + 280622655.

Almost surely, 2^20204828604 is an apocalyptic number.

It is an amenable number.

20204828604 is an abundant number, since it is smaller than the sum of its proper divisors (30868488236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20204828604 is a wasteful number, since it uses less digits than its factorization.

20204828604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561245249 (or 561245244 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 36.

The spelling of 20204828604 in words is "twenty billion, two hundred four million, eight hundred twenty-eight thousand, six hundred four".