978876368 has 20 divisors (see below), whose sum is σ = 1897179168. Its totient is φ = 489281760.

The previous prime is 978876323. The next prime is 978876377. The reversal of 978876368 is 863678879.

It is a Cunningham number, because it is equal to 31287²-1.

It is a self number, because there is not a number n which added to its sum of digits gives 978876368.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54755 + ... + 70397.

Almost surely, 2^978876368 is an apocalyptic number.

It is an amenable number.

978876368 is a deficient number, since it is larger than the sum of its proper divisors (918302800).

978876368 is a wasteful number, since it uses less digits than its factorization.

978876368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19562 (or 19556 counting only the distinct ones).

The product of its digits is 24385536, while the sum is 62.

The square root of 978876368 is about 31286.9999840189. Note that the first 4 decimals coincide. The cubic root of 978876368 is about 992.9086205403.

The spelling of 978876368 in words is "nine hundred seventy-eight million, eight hundred seventy-six thousand, three hundred sixty-eight".