20704889088 has 288 divisors, whose sum is σ = 68074030080. Its totient is φ = 6164398080.

The previous prime is 20704889083. The next prime is 20704889137. The reversal of 20704889088 is 88098840702.

20704889088 is a `hidden beast` number, since 2 + 0 + 70 + 488 + 90 + 8 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20704889083) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2781820 + ... + 2789252.

It is an arithmetic number, because the mean of its divisors is an integer number (236368160).

Almost surely, 2^20704889088 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 20704889088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34037015040).

20704889088 is an abundant number, since it is smaller than the sum of its proper divisors (47369140992).

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

20704889088 is a wasteful number, since it uses less digits than its factorization.

20704889088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7502 (or 7482 counting only the distinct ones).

The product of its (nonzero) digits is 2064384, while the sum is 54.

The spelling of 20704889088 in words is "twenty billion, seven hundred four million, eight hundred eighty-nine thousand, eighty-eight".