2322991440 has 320 divisors, whose sum is σ = 9976504320. Its totient is φ = 482664960.

The previous prime is 2322991427. The next prime is 2322991453. The reversal of 2322991440 is 441992232.

It is an interprime number because it is at equal distance from previous prime (2322991427) and next prime (2322991453).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 2322991395 and 2322991404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 159337 + ... + 173303.

It is an arithmetic number, because the mean of its divisors is an integer number (31176576).

Almost surely, 2^2322991440 is an apocalyptic number.

2322991440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2322991440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4988252160).

2322991440 is an abundant number, since it is smaller than the sum of its proper divisors (7653512880).

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

2322991440 is a wasteful number, since it uses less digits than its factorization.

2322991440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14007 (or 13995 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 2322991440 is about 48197.4215077944. The cubic root of 2322991440 is about 1324.3899296620.

The spelling of 2322991440 in words is "two billion, three hundred twenty-two million, nine hundred ninety-one thousand, four hundred forty".