20133887232 has 72 divisors (see below), whose sum is σ = 53616981600. Its totient is φ = 6707353600.

The previous prime is 20133887231. The next prime is 20133887273. The reversal of 20133887232 is 23278833102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20133887231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1490107 + ... + 1503557.

It is an arithmetic number, because the mean of its divisors is an integer number (744680300).

Almost surely, 2^20133887232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20133887232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26808490800).

20133887232 is an abundant number, since it is smaller than the sum of its proper divisors (33483094368).

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

20133887232 is a wasteful number, since it uses less digits than its factorization.

20133887232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15419 (or 15405 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 39.

The spelling of 20133887232 in words is "twenty billion, one hundred thirty-three million, eight hundred eighty-seven thousand, two hundred thirty-two".