978980 has 24 divisors (see below), whose sum is σ = 2123520. Its totient is φ = 378720.

The previous prime is 978973. The next prime is 978997. The reversal of 978980 is 89879.

It is an unprimeable number.

978980 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, 170 + ... + 1409.

It is an arithmetic number, because the mean of its divisors is an integer number (88480).

2⁹⁷⁸⁹⁸⁰ is an apocalyptic number.

It is an amenable number.

978980 is an abundant number, since it is smaller than the sum of its proper divisors (1144540).

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

978980 is a wasteful number, since it uses less digits than its factorization.

978980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1619 (or 1617 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 41.

The square root of 978980 is about 989.4341817423. The cubic root of 978980 is about 99.2943658494.

The spelling of 978980 in words is "nine hundred seventy-eight thousand, nine hundred eighty".