20823593920 has 28 divisors (see below), whose sum is σ = 49586183784. Its totient is φ = 8329437440.

The previous prime is 20823593873. The next prime is 20823593939. The reversal of 20823593920 is 2939532802.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32536546 + ... + 32537185.

Almost surely, 2^20823593920 is an apocalyptic number.

20823593920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20823593920 is an abundant number, since it is smaller than the sum of its proper divisors (28762589864).

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

20823593920 is an equidigital number, since it uses as much as digits as its factorization.

20823593920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65073748 (or 65073738 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 43.

The spelling of 20823593920 in words is "twenty billion, eight hundred twenty-three million, five hundred ninety-three thousand, nine hundred twenty".