2649422720 has 128 divisors (see below), whose sum is σ = 7307573760. Its totient is φ = 899721216.

The previous prime is 2649422717. The next prime is 2649422767. The reversal of 2649422720 is 272249462.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 476597 + ... + 482123.

It is an arithmetic number, because the mean of its divisors is an integer number (57090420).

Almost surely, 2^2649422720 is an apocalyptic number.

2649422720 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 2649422720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3653786880).

2649422720 is an abundant number, since it is smaller than the sum of its proper divisors (4658151040).

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

2649422720 is a wasteful number, since it uses less digits than its factorization.

2649422720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5660 (or 5648 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 38.

The square root of 2649422720 is about 51472.5433605141. The cubic root of 2649422720 is about 1383.7270113229.

The spelling of 2649422720 in words is "two billion, six hundred forty-nine million, four hundred twenty-two thousand, seven hundred twenty".