978883776 has 168 divisors, whose sum is σ = 3119835264. Its totient is φ = 291409920.

The previous prime is 978883771. The next prime is 978883813. The reversal of 978883776 is 677388879.

It is not an unprimeable number, because it can be changed into a prime (978883771) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 230020 + ... + 234236.

It is an arithmetic number, because the mean of its divisors is an integer number (18570448).

Almost surely, 2^978883776 is an apocalyptic number.

978883776 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 978883776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1559917632).

978883776 is an abundant number, since it is smaller than the sum of its proper divisors (2140951488).

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

978883776 is a wasteful number, since it uses less digits than its factorization.

978883776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4279 (or 4266 counting only the distinct ones).

The product of its digits is 28449792, while the sum is 63.

The square root of 978883776 is about 31287.1183716238. The cubic root of 978883776 is about 992.9111252654.

The spelling of 978883776 in words is "nine hundred seventy-eight million, eight hundred eighty-three thousand, seven hundred seventy-six".