7730725440 has 224 divisors, whose sum is σ = 25880592384. Its totient is φ = 1952225280.

The previous prime is 7730725421. The next prime is 7730725463. The reversal of 7730725440 is 445270377.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1395957 + ... + 1401483.

Almost surely, 2^7730725440 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 7730725440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12940296192).

7730725440 is an abundant number, since it is smaller than the sum of its proper divisors (18149866944).

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

7730725440 is a wasteful number, since it uses less digits than its factorization.

7730725440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5625 (or 5615 counting only the distinct ones).

The product of its (nonzero) digits is 164640, while the sum is 39.

The square root of 7730725440 is about 87924.5440136029. The cubic root of 7730725440 is about 1977.3038704433.

The spelling of 7730725440 in words is "seven billion, seven hundred thirty million, seven hundred twenty-five thousand, four hundred forty".