20402332120 has 64 divisors (see below), whose sum is σ = 47272626720. Its totient is φ = 7920267264.

The previous prime is 20402332117. The next prime is 20402332123. The reversal of 20402332120 is 2123320402.

It is an interprime number because it is at equal distance from previous prime (20402332117) and next prime (20402332123).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20402332123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 232264 + ... + 307816.

Almost surely, 2^20402332120 is an apocalyptic number.

20402332120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20402332120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23636313360).

20402332120 is an abundant number, since it is smaller than the sum of its proper divisors (26870294600).

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

20402332120 is a wasteful number, since it uses less digits than its factorization.

20402332120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75764 (or 75760 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 20402332120 its reverse (2123320402), we get a palindrome (22525652522).

The spelling of 20402332120 in words is "twenty billion, four hundred two million, three hundred thirty-two thousand, one hundred twenty".