20824332220 has 12 divisors (see below), whose sum is σ = 43731097704. Its totient is φ = 8329732880.

The previous prime is 20824332211. The next prime is 20824332241. The reversal of 20824332220 is 2223342802.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 520608286 + ... + 520608325.

It is an arithmetic number, because the mean of its divisors is an integer number (3644258142).

Almost surely, 2^20824332220 is an apocalyptic number.

20824332220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20824332220 is an abundant number, since it is smaller than the sum of its proper divisors (22906765484).

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

20824332220 is a wasteful number, since it uses less digits than its factorization.

20824332220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1041216620 (or 1041216618 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

The spelling of 20824332220 in words is "twenty billion, eight hundred twenty-four million, three hundred thirty-two thousand, two hundred twenty".