20000432100 has 72 divisors (see below), whose sum is σ = 63128647008. Its totient is φ = 4848588800.

The previous prime is 20000432093. The next prime is 20000432113. The reversal of 20000432100 is 123400002.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3027069 + ... + 3033668.

It is an arithmetic number, because the mean of its divisors is an integer number (876786764).

Almost surely, 2^20000432100 is an apocalyptic number.

20000432100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20000432100 is an abundant number, since it is smaller than the sum of its proper divisors (43128214908).

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

20000432100 is a wasteful number, since it uses less digits than its factorization.

20000432100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6060765 (or 6060758 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

Adding to 20000432100 its reverse (123400002), we get a palindrome (20123832102).

The spelling of 20000432100 in words is "twenty billion, four hundred thirty-two thousand, one hundred".