2199969728 has 126 divisors (see below), whose sum is σ = 5102568408. Its totient is φ = 940206080.

The previous prime is 2199969727. The next prime is 2199969731. The reversal of 2199969728 is 8279699912.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2199969727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2237525 + ... + 2238507.

Almost surely, 2^2199969728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2199969728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2551284204).

2199969728 is an abundant number, since it is smaller than the sum of its proper divisors (2902598680).

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

2199969728 is a wasteful number, since it uses less digits than its factorization.

2199969728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1051 (or 1013 counting only the distinct ones).

The product of its digits is 8817984, while the sum is 62.

The square root of 2199969728 is about 46903.8348965199. The cubic root of 2199969728 is about 1300.5854814446.

The spelling of 2199969728 in words is "two billion, one hundred ninety-nine million, nine hundred sixty-nine thousand, seven hundred twenty-eight".