28083679 has 4 divisors (see below), whose sum is σ = 30243976. Its totient is φ = 25923384.

The previous prime is 28083673. The next prime is 28083697. The reversal of 28083679 is 97638082.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28083679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28083673) 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, 1080129 + ... + 1080154.

It is an arithmetic number, because the mean of its divisors is an integer number (7560994).

Almost surely, 2^28083679 is an apocalyptic number.

28083679 is a deficient number, since it is larger than the sum of its proper divisors (2160297).

28083679 is a wasteful number, since it uses less digits than its factorization.

28083679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2160296.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 28083679 is about 5299.4036456945. The cubic root of 28083679 is about 303.9610948308.

The spelling of 28083679 in words is "twenty-eight million, eighty-three thousand, six hundred seventy-nine".