2199966720 has 528 divisors, whose sum is σ = 8512899840. Its totient is φ = 483065856.

The previous prime is 2199966707. The next prime is 2199966733. The reversal of 2199966720 is 276699912.

It is an interprime number because it is at equal distance from previous prime (2199966707) and next prime (2199966733).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 27847641 + ... + 27847719.

Almost surely, 2^2199966720 is an apocalyptic number.

2199966720 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 2199966720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4256449920).

2199966720 is an abundant number, since it is smaller than the sum of its proper divisors (6312933120).

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

2199966720 is a wasteful number, since it uses less digits than its factorization.

2199966720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158 (or 133 counting only the distinct ones).

The product of its (nonzero) digits is 734832, while the sum is 51.

The square root of 2199966720 is about 46903.8028309006. The cubic root of 2199966720 is about 1300.5848886845.

The spelling of 2199966720 in words is "two billion, one hundred ninety-nine million, nine hundred sixty-six thousand, seven hundred twenty".