20798886240 has 192 divisors, whose sum is σ = 79414110720. Its totient is φ = 5042142720.

The previous prime is 20798886211. The next prime is 20798886259. The reversal of 20798886240 is 4268889702.

20798886240 is a `hidden beast` number, since 2 + 0 + 7 + 9 + 8 + 8 + 8 + 624 + 0 = 666.

It is a super-2 number, since 2×20798886240² (a number of 21 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 171324 + ... + 266363.

It is an arithmetic number, because the mean of its divisors is an integer number (413615160).

Almost surely, 2^20798886240 is an apocalyptic number.

20798886240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20798886240 is an abundant number, since it is smaller than the sum of its proper divisors (58615224480).

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

20798886240 is a wasteful number, since it uses less digits than its factorization.

20798886240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437722 (or 437708 counting only the distinct ones).

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

The spelling of 20798886240 in words is "twenty billion, seven hundred ninety-eight million, eight hundred eighty-six thousand, two hundred forty".