823728798 has 16 divisors (see below), whose sum is σ = 1830508560. Its totient is φ = 274576248.

The previous prime is 823728781. The next prime is 823728839. The reversal of 823728798 is 897827328.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 15254237 = 823728798 / (8 + 2 + 3 + 7 + 2 + 8 + 7 + 9 + 8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7627065 + ... + 7627172.

It is an arithmetic number, because the mean of its divisors is an integer number (114406785).

Almost surely, 2^823728798 is an apocalyptic number.

823728798 is an abundant number, since it is smaller than the sum of its proper divisors (1006779762).

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

823728798 is a wasteful number, since it uses less digits than its factorization.

823728798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15254248 (or 15254242 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 54.

The square root of 823728798 is about 28700.6759153857. The cubic root of 823728798 is about 937.4067644879.

The spelling of 823728798 in words is "eight hundred twenty-three million, seven hundred twenty-eight thousand, seven hundred ninety-eight".