7489880640 has 252 divisors, whose sum is σ = 28318302012. Its totient is φ = 1815644160.

The previous prime is 7489880639. The next prime is 7489880681. The reversal of 7489880640 is 460889847.

It can be written as a sum of positive squares in 2 ways, for example, as 1547320896 + 5942559744 = 39336^2 + 77088^2 .

It is a super-3 number, since 3×7489880640³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 337734 + ... + 359226.

Almost surely, 2^7489880640 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 7489880640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14159151006).

7489880640 is an abundant number, since it is smaller than the sum of its proper divisors (20828421372).

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

7489880640 is a wasteful number, since it uses less digits than its factorization.

7489880640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21538 (or 21514 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 54.

The square root of 7489880640 is about 86544.0965057698. The cubic root of 7489880640 is about 1956.5530697926.

The spelling of 7489880640 in words is "seven billion, four hundred eighty-nine million, eight hundred eighty thousand, six hundred forty".