9770117728 has 96 divisors (see below), whose sum is σ = 22738544640. Its totient is φ = 4043796480.

The previous prime is 9770117683. The next prime is 9770117729. The reversal of 9770117728 is 8277110779.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9770117729) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4297200 + ... + 4299472.

It is an arithmetic number, because the mean of its divisors is an integer number (236859840).

Almost surely, 2^9770117728 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 9770117728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11369272320).

9770117728 is an abundant number, since it is smaller than the sum of its proper divisors (12968426912).

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

9770117728 is a wasteful number, since it uses less digits than its factorization.

9770117728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2940 (or 2932 counting only the distinct ones).

The product of its (nonzero) digits is 345744, while the sum is 49.

The square root of 9770117728 is about 98843.9058718341. The cubic root of 9770117728 is about 2137.7976679164.

The spelling of 9770117728 in words is "nine billion, seven hundred seventy million, one hundred seventeen thousand, seven hundred twenty-eight".