2199242240 has 80 divisors (see below), whose sum is σ = 5678730288. Its totient is φ = 812015616.

The previous prime is 2199242233. The next prime is 2199242251. The reversal of 2199242240 is 422429912.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 2199242240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239 + ... + 66321.

Almost surely, 2^2199242240 is an apocalyptic number.

2199242240 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 2199242240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2839365144).

2199242240 is an abundant number, since it is smaller than the sum of its proper divisors (3479488048).

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

2199242240 is an equidigital number, since it uses as much as digits as its factorization.

2199242240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66119 (or 66103 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 2199242240 is about 46896.0791538056. The cubic root of 2199242240 is about 1300.4421060411.

The spelling of 2199242240 in words is "two billion, one hundred ninety-nine million, two hundred forty-two thousand, two hundred forty".