9278118872 has 64 divisors (see below), whose sum is σ = 19211212800. Its totient is φ = 4165712640.

The previous prime is 9278118869. The next prime is 9278118881. The reversal of 9278118872 is 2788118729.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4340588 + ... + 4342724.

It is an arithmetic number, because the mean of its divisors is an integer number (300175200).

Almost surely, 2^9278118872 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 9278118872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9605606400).

9278118872 is an abundant number, since it is smaller than the sum of its proper divisors (9933093928).

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

9278118872 is a wasteful number, since it uses less digits than its factorization.

9278118872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2736 (or 2732 counting only the distinct ones).

The product of its digits is 903168, while the sum is 53.

The square root of 9278118872 is about 96322.9924369047. The cubic root of 9278118872 is about 2101.2931469988.

The spelling of 9278118872 in words is "nine billion, two hundred seventy-eight million, one hundred eighteen thousand, eight hundred seventy-two".