9278840320 has 160 divisors (see below), whose sum is σ = 23617059840. Its totient is φ = 3488686080.

The previous prime is 9278840293. The next prime is 9278840369. The reversal of 9278840320 is 230488729.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (160).

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, 3472585 + ... + 3475255.

It is an arithmetic number, because the mean of its divisors is an integer number (147606624).

Almost surely, 2^9278840320 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 9278840320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11808529920).

9278840320 is an abundant number, since it is smaller than the sum of its proper divisors (14338219520).

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

9278840320 is a wasteful number, since it uses less digits than its factorization.

9278840320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2776 (or 2760 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 9278840320 is about 96326.7373059007. The cubic root of 9278840320 is about 2101.3476097071.

The spelling of 9278840320 in words is "nine billion, two hundred seventy-eight million, eight hundred forty thousand, three hundred twenty".