20402232000 has 112 divisors (see below), whose sum is σ = 67368249312. Its totient is φ = 5440588800.

The previous prime is 20402231987. The next prime is 20402232001. The reversal of 20402232000 is 23220402.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (20402232001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 401047 + ... + 449046.

It is an arithmetic number, because the mean of its divisors is an integer number (601502226).

Almost surely, 2^20402232000 is an apocalyptic number.

20402232000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20402232000 is an abundant number, since it is smaller than the sum of its proper divisors (46966017312).

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

20402232000 is an equidigital number, since it uses as much as digits as its factorization.

20402232000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 850123 (or 850103 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

Adding to 20402232000 its reverse (23220402), we get a palindrome (20425452402).

The spelling of 20402232000 in words is "twenty billion, four hundred two million, two hundred thirty-two thousand".