865920328 has 128 divisors (see below), whose sum is σ = 2082366720. Its totient is φ = 328458240.

The previous prime is 865920317. The next prime is 865920371. The reversal of 865920328 is 823029568.

865920328 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1999600 + ... + 2000032.

It is an arithmetic number, because the mean of its divisors is an integer number (16268490).

Almost surely, 2^865920328 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 865920328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1041183360).

865920328 is an abundant number, since it is smaller than the sum of its proper divisors (1216446392).

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

865920328 is a wasteful number, since it uses less digits than its factorization.

865920328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567 (or 563 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 865920328 is about 29426.5242256030. The cubic root of 865920328 is about 953.1457411493.

The spelling of 865920328 in words is "eight hundred sixty-five million, nine hundred twenty thousand, three hundred twenty-eight".