23221310392 has 64 divisors (see below), whose sum is σ = 50728446720. Its totient is φ = 9760051968.

The previous prime is 23221310383. The next prime is 23221310419. The reversal of 23221310392 is 29301312232.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 23221310392.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 618543 + ... + 655009.

It is an arithmetic number, because the mean of its divisors is an integer number (792631980).

Almost surely, 2^23221310392 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 23221310392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25364223360).

23221310392 is an abundant number, since it is smaller than the sum of its proper divisors (27507136328).

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

23221310392 is a wasteful number, since it uses less digits than its factorization.

23221310392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36700 (or 36696 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 28.

The spelling of 23221310392 in words is "twenty-three billion, two hundred twenty-one million, three hundred ten thousand, three hundred ninety-two".