20332331292 has 192 divisors, whose sum is σ = 61072220160. Its totient is φ = 5117181696.

The previous prime is 20332331291. The next prime is 20332331309. The reversal of 20332331292 is 29213323302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20332331291) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 16148959 + ... + 16150217.

It is an arithmetic number, because the mean of its divisors is an integer number (318084480).

Almost surely, 2^20332331292 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 20332331292, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30536110080).

20332331292 is an abundant number, since it is smaller than the sum of its proper divisors (40739888868).

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

20332331292 is a wasteful number, since it uses less digits than its factorization.

20332331292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1952 (or 1950 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 30.

Adding to 20332331292 its reverse (29213323302), we get a palindrome (49545654594).

The spelling of 20332331292 in words is "twenty billion, three hundred thirty-two million, three hundred thirty-one thousand, two hundred ninety-two".