816485328 has 120 divisors (see below), whose sum is σ = 2428639200. Its totient is φ = 255336192.

The previous prime is 816485317. The next prime is 816485381. The reversal of 816485328 is 823584618.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 291358 + ... + 294146.

It is an arithmetic number, because the mean of its divisors is an integer number (20238660).

Almost surely, 2^816485328 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 816485328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1214319600).

816485328 is an abundant number, since it is smaller than the sum of its proper divisors (1612153872).

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

816485328 is a wasteful number, since it uses less digits than its factorization.

816485328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2929 (or 2920 counting only the distinct ones).

The product of its digits is 368640, while the sum is 45.

The square root of 816485328 is about 28574.2073905822. The cubic root of 816485328 is about 934.6509713688.

The spelling of 816485328 in words is "eight hundred sixteen million, four hundred eighty-five thousand, three hundred twenty-eight".