28694339 has 4 divisors (see below), whose sum is σ = 29164800. Its totient is φ = 28223880.

The previous prime is 28694333. The next prime is 28694353. The reversal of 28694339 is 93349682.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28694339 - 2²⁰ = 27645763 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28694339.

It is not an unprimeable number, because it can be changed into a prime (28694333) 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, 235139 + ... + 235260.

It is an arithmetic number, because the mean of its divisors is an integer number (7291200).

Almost surely, 2^28694339 is an apocalyptic number.

28694339 is a deficient number, since it is larger than the sum of its proper divisors (470461).

28694339 is an equidigital number, since it uses as much as digits as its factorization.

28694339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470460.

The product of its digits is 279936, while the sum is 44.

The square root of 28694339 is about 5356.7097177279. The cubic root of 28694339 is about 306.1484570197.

The spelling of 28694339 in words is "twenty-eight million, six hundred ninety-four thousand, three hundred thirty-nine".