978850 has 12 divisors (see below), whose sum is σ = 1820754. Its totient is φ = 391520.

The previous prime is 978839. The next prime is 978851. The reversal of 978850 is 58879.

It can be written as a sum of positive squares in 3 ways, for example, as 915849 + 63001 = 957^2 + 251^2 .

It is not an unprimeable number, because it can be changed into a prime (978851) by changing a digit.

978850 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 5 ways as a sum of consecutive naturals, for example, 9739 + ... + 9838.

2⁹⁷⁸⁸⁵⁰ is an apocalyptic number.

978850 is a deficient number, since it is larger than the sum of its proper divisors (841904).

978850 is a wasteful number, since it uses less digits than its factorization.

978850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19589 (or 19584 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 37.

The square root of 978850 is about 989.3684854492. The cubic root of 978850 is about 99.2899705131.

The spelling of 978850 in words is "nine hundred seventy-eight thousand, eight hundred fifty".