978863824 has 10 divisors (see below), whose sum is σ = 1896548690. Its totient is φ = 489431904.

The previous prime is 978863779. The next prime is 978863839. The reversal of 978863824 is 428368879.

It can be written as a sum of positive squares in only one way, i.e., 941262400 + 37601424 = 30680^2 + 6132^2 .

It is a congruent number.

It is an unprimeable 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 as a sum of consecutive naturals, namely, 30589479 + ... + 30589510.

It is an arithmetic number, because the mean of its divisors is an integer number (189654869).

Almost surely, 2^978863824 is an apocalyptic number.

It is an amenable number.

978863824 is a deficient number, since it is larger than the sum of its proper divisors (917684866).

978863824 is a wasteful number, since it uses less digits than its factorization.

978863824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61178997 (or 61178991 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 55.

The square root of 978863824 is about 31286.7995167291. The cubic root of 978863824 is about 992.9043792492.

The spelling of 978863824 in words is "nine hundred seventy-eight million, eight hundred sixty-three thousand, eight hundred twenty-four".