7896637440 has 336 divisors, whose sum is σ = 28297241856. Its totient is φ = 2034892800.

The previous prime is 7896637417. The next prime is 7896637493. The reversal of 7896637440 is 447366987.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11427495 + ... + 11428185.

Almost surely, 2^7896637440 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 7896637440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14148620928).

7896637440 is an abundant number, since it is smaller than the sum of its proper divisors (20400604416).

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

7896637440 is a wasteful number, since it uses less digits than its factorization.

7896637440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 759 (or 732 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 54.

The square root of 7896637440 is about 88863.0262820258. The cubic root of 7896637440 is about 1991.3490881470.

The spelling of 7896637440 in words is "seven billion, eight hundred ninety-six million, six hundred thirty-seven thousand, four hundred forty".