978372 has 24 divisors (see below), whose sum is σ = 2536800. Its totient is φ = 326088.

The previous prime is 978359. The next prime is 978389. The reversal of 978372 is 273879.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nialpdrome in base 16.

It is an unprimeable number.

978372 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4422 + ... + 4637.

It is an arithmetic number, because the mean of its divisors is an integer number (105700).

2⁹⁷⁸³⁷² is an apocalyptic number.

It is an amenable number.

978372 is an abundant number, since it is smaller than the sum of its proper divisors (1558428).

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

978372 is a wasteful number, since it uses less digits than its factorization.

978372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9072 (or 9064 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 978372 is about 989.1268877146. The cubic root of 978372 is about 99.2738058527.

The spelling of 978372 in words is "nine hundred seventy-eight thousand, three hundred seventy-two".