9978360 has 96 divisors (see below), whose sum is σ = 34842960. Its totient is φ = 2279424.

The previous prime is 9978359. The next prime is 9978361. The reversal of 9978360 is 638799.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (9978359) and next prime (9978361).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9978361) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5032 + ... + 6728.

Almost surely, 2^9978360 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 9978360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17421480).

9978360 is an abundant number, since it is smaller than the sum of its proper divisors (24864600).

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

9978360 is a wasteful number, since it uses less digits than its factorization.

9978360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1725 (or 1714 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 9978360 is about 3158.8542226573. The cubic root of 9978360 is about 215.2879502127.

The spelling of 9978360 in words is "nine million, nine hundred seventy-eight thousand, three hundred sixty".