20779727304 has 64 divisors (see below), whose sum is σ = 61285847040. Its totient is φ = 5745545280.

The previous prime is 20779727291. The next prime is 20779727341. The reversal of 20779727304 is 40372797702.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1989774 + ... + 2000189.

It is an arithmetic number, because the mean of its divisors is an integer number (957591360).

Almost surely, 2^20779727304 is an apocalyptic number.

20779727304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20779727304 is an abundant number, since it is smaller than the sum of its proper divisors (40506119736).

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

20779727304 is a wasteful number, since it uses less digits than its factorization.

20779727304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3990010 (or 3990006 counting only the distinct ones).

The product of its (nonzero) digits is 1037232, while the sum is 48.

The spelling of 20779727304 in words is "twenty billion, seven hundred seventy-nine million, seven hundred twenty-seven thousand, three hundred four".