9628978307 has 6 divisors (see below), whose sum is σ = 10426645332. Its totient is φ = 8888287512.

The previous prime is 9628978301. The next prime is 9628978343. The reversal of 9628978307 is 7038798269.

9628978307 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9628978307 - 2¹⁰ = 9628977283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9628978301) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28487933 + ... + 28488270.

It is an arithmetic number, because the mean of its divisors is an integer number (1737774222).

Almost surely, 2^9628978307 is an apocalyptic number.

9628978307 is a deficient number, since it is larger than the sum of its proper divisors (797667025).

9628978307 is a wasteful number, since it uses less digits than its factorization.

9628978307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56976229 (or 56976216 counting only the distinct ones).

The product of its (nonzero) digits is 9144576, while the sum is 59.

The square root of 9628978307 is about 98127.3575869645. The cubic root of 9628978307 is about 2127.4534656855.

The spelling of 9628978307 in words is "nine billion, six hundred twenty-eight million, nine hundred seventy-eight thousand, three hundred seven".