28282339 has 8 divisors (see below), whose sum is σ = 30222720. Its totient is φ = 26372736.

The previous prime is 28282313. The next prime is 28282343. The reversal of 28282339 is 93328282.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28282339 - 2⁵ = 28282307 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28282298 and 28282307.

It is not an unprimeable number, because it can be changed into a prime (28282399) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5779 + ... + 9484.

It is an arithmetic number, because the mean of its divisors is an integer number (3777840).

Almost surely, 2^28282339 is an apocalyptic number.

28282339 is a deficient number, since it is larger than the sum of its proper divisors (1940381).

28282339 is a wasteful number, since it uses less digits than its factorization.

28282339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15389.

The product of its digits is 41472, while the sum is 37.

The square root of 28282339 is about 5318.1142334478. The cubic root of 28282339 is about 304.6761374627.

It can be divided in two parts, 282 and 82339, that added together give a triangular number (82621 = T₄₀₆).

The spelling of 28282339 in words is "twenty-eight million, two hundred eighty-two thousand, three hundred thirty-nine".