8447328 has 60 divisors (see below), whose sum is σ = 24850980. Its totient is φ = 2814912.

The previous prime is 8447311. The next prime is 8447377. The reversal of 8447328 is 8237448.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 8447292 and 8447301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 963 + ... + 4221.

It is an arithmetic number, because the mean of its divisors is an integer number (414183).

Almost surely, 2^8447328 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 8447328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12425490).

8447328 is an abundant number, since it is smaller than the sum of its proper divisors (16403652).

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

8447328 is a wasteful number, since it uses less digits than its factorization.

8447328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3281 (or 3264 counting only the distinct ones).

The product of its digits is 43008, while the sum is 36.

The square root of 8447328 is about 2906.4287364393. The cubic root of 8447328 is about 203.6603344154.

The spelling of 8447328 in words is "eight million, four hundred forty-seven thousand, three hundred twenty-eight".