8139828 has 36 divisors (see below), whose sum is σ = 20055840. Its totient is φ = 2569104.

The previous prime is 8139797. The next prime is 8139829. The reversal of 8139828 is 8289318.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8139829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3393 + ... + 5271.

Almost surely, 2^8139828 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 8139828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10027920).

8139828 is an abundant number, since it is smaller than the sum of its proper divisors (11916012).

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

8139828 is a wasteful number, since it uses less digits than its factorization.

8139828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1924 (or 1903 counting only the distinct ones).

The product of its digits is 27648, while the sum is 39.

The square root of 8139828 is about 2853.0383803938. The cubic root of 8139828 is about 201.1585096529.

The spelling of 8139828 in words is "eight million, one hundred thirty-nine thousand, eight hundred twenty-eight".