20296957820 has 24 divisors (see below), whose sum is σ = 42627939984. Its totient is φ = 8117958656.

The previous prime is 20296957787. The next prime is 20296957847. The reversal of 20296957820 is 2875969202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174524 + ... + 266556.

It is an arithmetic number, because the mean of its divisors is an integer number (1776164166).

Almost surely, 2^20296957820 is an apocalyptic number.

20296957820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20296957820 is an abundant number, since it is smaller than the sum of its proper divisors (22330982164).

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

20296957820 is a wasteful number, since it uses less digits than its factorization.

20296957820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103069 (or 103067 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 50.

The spelling of 20296957820 in words is "twenty billion, two hundred ninety-six million, nine hundred fifty-seven thousand, eight hundred twenty".