20402232032 has 96 divisors (see below), whose sum is σ = 52344315072. Its totient is φ = 7596417024.

The previous prime is 20402232031. The next prime is 20402232143. The reversal of 20402232032 is 23023220402.

It is a junction number, because it is equal to n+sod(n) for n = 20402231995 and 20402232013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20402232031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156563 + ... + 255570.

It is an arithmetic number, because the mean of its divisors is an integer number (545253282).

Almost surely, 2^20402232032 is an apocalyptic number.

It is an amenable number.

20402232032 is an abundant number, since it is smaller than the sum of its proper divisors (31942083040).

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

20402232032 is a wasteful number, since it uses less digits than its factorization.

20402232032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412180 (or 412172 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

Adding to 20402232032 its reverse (23023220402), we get a palindrome (43425452434).

The spelling of 20402232032 in words is "twenty billion, four hundred two million, two hundred thirty-two thousand, thirty-two".