816713328 has 80 divisors (see below), whose sum is σ = 2228885120. Its totient is φ = 256981248.

The previous prime is 816713299. The next prime is 816713329. The reversal of 816713328 is 823317618.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816713329) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 278526 + ... + 281442.

It is an arithmetic number, because the mean of its divisors is an integer number (27861064).

Almost surely, 2^816713328 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 816713328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1114442560).

816713328 is an abundant number, since it is smaller than the sum of its proper divisors (1412171792).

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

816713328 is a wasteful number, since it uses less digits than its factorization.

816713328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3254 (or 3248 counting only the distinct ones).

The product of its digits is 48384, while the sum is 39.

The square root of 816713328 is about 28578.1967240762. The cubic root of 816713328 is about 934.7379623538.

The spelling of 816713328 in words is "eight hundred sixteen million, seven hundred thirteen thousand, three hundred twenty-eight".