2199227920 has 20 divisors (see below), whose sum is σ = 5113205100. Its totient is φ = 879691136.

The previous prime is 2199227917. The next prime is 2199227929. The reversal of 2199227920 is 297229912.

It can be written as a sum of positive squares in 2 ways, for example, as 506070016 + 1693157904 = 22496^2 + 41148^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (2199227929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13745095 + ... + 13745254.

It is an arithmetic number, because the mean of its divisors is an integer number (255660255).

Almost surely, 2^2199227920 is an apocalyptic number.

2199227920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2199227920 is an abundant number, since it is smaller than the sum of its proper divisors (2913977180).

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

2199227920 is a wasteful number, since it uses less digits than its factorization.

2199227920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27490362 (or 27490356 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 2199227920 is about 46895.9264755480. The cubic root of 2199227920 is about 1300.4392834975.

The spelling of 2199227920 in words is "two billion, one hundred ninety-nine million, two hundred twenty-seven thousand, nine hundred twenty".