20704958208 has 360 divisors, whose sum is σ = 68949974016. Its totient is φ = 6125414400.

The previous prime is 20704958203. The next prime is 20704958273. The reversal of 20704958208 is 80285940702.

20704958208 is a `hidden beast` number, since 20 + 7 + 0 + 49 + 582 + 0 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20704958201) by changing a digit.

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 39 ways as a sum of consecutive naturals, for example, 9807073 + ... + 9809183.

Almost surely, 2^20704958208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20704958208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34474987008).

20704958208 is an abundant number, since it is smaller than the sum of its proper divisors (48245015808).

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

20704958208 is a wasteful number, since it uses less digits than its factorization.

20704958208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2193 (or 2170 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The spelling of 20704958208 in words is "twenty billion, seven hundred four million, nine hundred fifty-eight thousand, two hundred eight".