978330 has 16 divisors (see below), whose sum is σ = 2348064. Its totient is φ = 260880.

The previous prime is 978323. The next prime is 978337. The reversal of 978330 is 33879.

It is an interprime number because it is at equal distance from previous prime (978323) and next prime (978337).

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 32611 = 978330 / (9 + 7 + 8 + 3 + 3 + 0).

It is not an unprimeable number, because it can be changed into a prime (978337) by changing a digit.

978330 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16276 + ... + 16335.

It is an arithmetic number, because the mean of its divisors is an integer number (146754).

2⁹⁷⁸³³⁰ is an apocalyptic number.

978330 is an abundant number, since it is smaller than the sum of its proper divisors (1369734).

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

978330 is a wasteful number, since it uses less digits than its factorization.

978330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32621.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 978330 is about 989.1056566414. The cubic root of 978330 is about 99.2723852753.

The spelling of 978330 in words is "nine hundred seventy-eight thousand, three hundred thirty".