20286833920 has 36 divisors (see below), whose sum is σ = 48593309940. Its totient is φ = 8114733056.

The previous prime is 20286833909. The next prime is 20286833923. The reversal of 20286833920 is 2933868202.

It can be written as a sum of positive squares in 2 ways, for example, as 4958413056 + 15328420864 = 70416^2 + 123808^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20286833923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7923265 + ... + 7925824.

It is an arithmetic number, because the mean of its divisors is an integer number (1349814165).

Almost surely, 2^20286833920 is an apocalyptic number.

20286833920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20286833920 is an abundant number, since it is smaller than the sum of its proper divisors (28306476020).

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

20286833920 is an equidigital number, since it uses as much as digits as its factorization.

20286833920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15849110 (or 15849096 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 43.

The spelling of 20286833920 in words is "twenty billion, two hundred eighty-six million, eight hundred thirty-three thousand, nine hundred twenty".