20332204020 has 72 divisors (see below), whose sum is σ = 62685441000. Its totient is φ = 5333034240.

The previous prime is 20332204003. The next prime is 20332204027. The reversal of 20332204020 is 2040223302.

It can be written as a sum of positive squares in 4 ways, for example, as 203404644 + 20128799376 = 14262^2 + 141876^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20332203984 and 20332204002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20332204027) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 914895 + ... + 936854.

It is an arithmetic number, because the mean of its divisors is an integer number (870631125).

Almost surely, 2^20332204020 is an apocalyptic number.

20332204020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20332204020 is an abundant number, since it is smaller than the sum of its proper divisors (42353236980).

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

20332204020 is a wasteful number, since it uses less digits than its factorization.

20332204020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1851825 (or 1851820 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

Adding to 20332204020 its reverse (2040223302), we get a palindrome (22372427322).

The spelling of 20332204020 in words is "twenty billion, three hundred thirty-two million, two hundred four thousand, twenty".