20798604288 has 792 divisors, whose sum is σ = 78632311680. Its totient is φ = 5233213440.

The previous prime is 20798604259. The next prime is 20798604301. The reversal of 20798604288 is 88240689702.

20798604288 is a `hidden beast` number, since 2 + 0 + 7 + 9 + 8 + 604 + 28 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (792).

It is an unprimeable number.

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 71 ways as a sum of consecutive naturals, for example, 263273433 + ... + 263273511.

Almost surely, 2^20798604288 is an apocalyptic number.

20798604288 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20798604288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39316155840).

20798604288 is an abundant number, since it is smaller than the sum of its proper divisors (57833707392).

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

20798604288 is a wasteful number, since it uses less digits than its factorization.

20798604288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183 (or 155 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 54.

The spelling of 20798604288 in words is "twenty billion, seven hundred ninety-eight million, six hundred four thousand, two hundred eighty-eight".