978018 has 8 divisors (see below), whose sum is σ = 1956048. Its totient is φ = 326004.

The previous prime is 978017. The next prime is 978031. The reversal of 978018 is 810879.

It is a sphenic number, since it is the product of 3 distinct primes.

978018 is an admirable number.

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 978018.

It is not an unprimeable number, because it can be changed into a prime (978011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81496 + ... + 81507.

It is an arithmetic number, because the mean of its divisors is an integer number (244506).

2⁹⁷⁸⁰¹⁸ is an apocalyptic number.

978018 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

978018 is a wasteful number, since it uses less digits than its factorization.

978018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163008.

The product of its (nonzero) digits is 4032, while the sum is 33.

The square root of 978018 is about 988.9479258283. The cubic root of 978018 is about 99.2618311415.

The spelling of 978018 in words is "nine hundred seventy-eight thousand, eighteen".