823128716 has 12 divisors (see below), whose sum is σ = 1516289880. Its totient is φ = 389903040.

The previous prime is 823128703. The next prime is 823128727. The reversal of 823128716 is 617821328.

823128716 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a self number, because there is not a number n which added to its sum of digits gives 823128716.

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, 5415245 + ... + 5415396.

It is an arithmetic number, because the mean of its divisors is an integer number (126357490).

Almost surely, 2^823128716 is an apocalyptic number.

It is an amenable number.

823128716 is a deficient number, since it is larger than the sum of its proper divisors (693161164).

823128716 is a wasteful number, since it uses less digits than its factorization.

823128716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10830664 (or 10830662 counting only the distinct ones).

The product of its digits is 32256, while the sum is 38.

The square root of 823128716 is about 28690.2198667072. The cubic root of 823128716 is about 937.1790772602.

The spelling of 823128716 in words is "eight hundred twenty-three million, one hundred twenty-eight thousand, seven hundred sixteen".