2199787320 has 256 divisors, whose sum is σ = 7166361600. Its totient is φ = 538513920.

The previous prime is 2199787319. The next prime is 2199787327. The reversal of 2199787320 is 237879912.

It is a self number, because there is not a number n which added to its sum of digits gives 2199787320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2199787327) 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, 17321097 + ... + 17321223.

It is an arithmetic number, because the mean of its divisors is an integer number (27993600).

Almost surely, 2^2199787320 is an apocalyptic number.

2199787320 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 2199787320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3583180800).

2199787320 is an abundant number, since it is smaller than the sum of its proper divisors (4966574280).

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

2199787320 is a wasteful number, since it uses less digits than its factorization.

2199787320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338 (or 334 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 48.

The square root of 2199787320 is about 46901.8903670204. The cubic root of 2199787320 is about 1300.5495349267.

The spelling of 2199787320 in words is "two billion, one hundred ninety-nine million, seven hundred eighty-seven thousand, three hundred twenty".