2321878992 has 80 divisors (see below), whose sum is σ = 6084699840. Its totient is φ = 762854400.

The previous prime is 2321878987. The next prime is 2321879011. The reversal of 2321878992 is 2998781232.

It is a super-2 number, since 2×2321878992² = 10782244106981872128, which contains 22 as substring.

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, 1797867 + ... + 1799157.

It is an arithmetic number, because the mean of its divisors is an integer number (76058748).

Almost surely, 2^2321878992 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 2321878992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3042349920).

2321878992 is an abundant number, since it is smaller than the sum of its proper divisors (3762820848).

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

2321878992 is a wasteful number, since it uses less digits than its factorization.

2321878992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1812 (or 1806 counting only the distinct ones).

The product of its digits is 870912, while the sum is 51.

The square root of 2321878992 is about 48185.8795914322. The cubic root of 2321878992 is about 1324.1784853222.

The spelling of 2321878992 in words is "two billion, three hundred twenty-one million, eight hundred seventy-eight thousand, nine hundred ninety-two".