864104528 has 80 divisors (see below), whose sum is σ = 1970588160. Its totient is φ = 359424000.

The previous prime is 864104513. The next prime is 864104531. The reversal of 864104528 is 825401468.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 864104491 and 864104500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 538928 + ... + 540528.

It is an arithmetic number, because the mean of its divisors is an integer number (24632352).

Almost surely, 2^864104528 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 864104528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (985294080).

864104528 is an abundant number, since it is smaller than the sum of its proper divisors (1106483632).

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

864104528 is a wasteful number, since it uses less digits than its factorization.

864104528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1756 (or 1750 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 38.

The square root of 864104528 is about 29395.6549170111. The cubic root of 864104528 is about 952.4790388583.

The spelling of 864104528 in words is "eight hundred sixty-four million, one hundred four thousand, five hundred twenty-eight".