2622721920 has 512 divisors, whose sum is σ = 10906721280. Its totient is φ = 520224768.

The previous prime is 2622721889. The next prime is 2622721931. The reversal of 2622721920 is 291272262.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2969799 + ... + 2970681.

It is an arithmetic number, because the mean of its divisors is an integer number (21302190).

Almost surely, 2^2622721920 is an apocalyptic number.

2622721920 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 2622721920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5453360640).

2622721920 is an abundant number, since it is smaller than the sum of its proper divisors (8283999360).

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

2622721920 is a wasteful number, since it uses less digits than its factorization.

2622721920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 942 (or 930 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 2622721920 is about 51212.5172199141. The cubic root of 2622721920 is about 1379.0629219046.

The spelling of 2622721920 in words is "two billion, six hundred twenty-two million, seven hundred twenty-one thousand, nine hundred twenty".