8339728 has 20 divisors (see below), whose sum is σ = 16553628. Its totient is φ = 4067840.

The previous prime is 8339717. The next prime is 8339729. The reversal of 8339728 is 8279338.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4129024 + 4210704 = 2032^2 + 2052^2 .

It is a super-2 number, since 2×8339728² = 139102126227968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8339729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5701 + ... + 7012.

Almost surely, 2^8339728 is an apocalyptic number.

It is an amenable number.

8339728 is a deficient number, since it is larger than the sum of its proper divisors (8213900).

8339728 is a wasteful number, since it uses less digits than its factorization.

8339728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12762 (or 12756 counting only the distinct ones).

The product of its digits is 72576, while the sum is 40.

The square root of 8339728 is about 2887.8587223062. The cubic root of 8339728 is about 202.7919114659.

The spelling of 8339728 in words is "eight million, three hundred thirty-nine thousand, seven hundred twenty-eight".