20292620856 has 32 divisors (see below), whose sum is σ = 50752895760. Its totient is φ = 6761361152.

The previous prime is 20292620851. The next prime is 20292620891. The reversal of 20292620856 is 65802629202.

It is a super-2 number, since 2×20292620856² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20292620851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119235 + ... + 234098.

Almost surely, 2^20292620856 is an apocalyptic number.

It is an amenable number.

20292620856 is an abundant number, since it is smaller than the sum of its proper divisors (30460274904).

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

20292620856 is a wasteful number, since it uses less digits than its factorization.

20292620856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355735 (or 355731 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The spelling of 20292620856 in words is "twenty billion, two hundred ninety-two million, six hundred twenty thousand, eight hundred fifty-six".