798978816 has 180 divisors, whose sum is σ = 2430700272. Its totient is φ = 260941824.

The previous prime is 798978799. The next prime is 798978857. The reversal of 798978816 is 618879897.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1098645 + ... + 1099371.

Almost surely, 2^798978816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 798978816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1215350136).

798978816 is an abundant number, since it is smaller than the sum of its proper divisors (1631721456).

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

798978816 is an equidigital number, since it uses as much as digits as its factorization.

798978816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808 (or 785 counting only the distinct ones).

The product of its digits is 12192768, while the sum is 63.

The square root of 798978816 is about 28266.2133296981. The cubic root of 798978816 is about 927.9226055154.

The spelling of 798978816 in words is "seven hundred ninety-eight million, nine hundred seventy-eight thousand, eight hundred sixteen".