28083283 has 4 divisors (see below), whose sum is σ = 28122640. Its totient is φ = 28043928.

The previous prime is 28083277. The next prime is 28083313. The reversal of 28083283 is 38238082.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38238082 = 2 ⋅19119041.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28083283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28083203) 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 3 ways as a sum of consecutive naturals, for example, 18588 + ... + 20041.

It is an arithmetic number, because the mean of its divisors is an integer number (7030660).

Almost surely, 2^28083283 is an apocalyptic number.

28083283 is a deficient number, since it is larger than the sum of its proper divisors (39357).

28083283 is an equidigital number, since it uses as much as digits as its factorization.

28083283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39356.

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 28083283 is about 5299.3662828682. The cubic root of 28083283 is about 303.9596661343.

The spelling of 28083283 in words is "twenty-eight million, eighty-three thousand, two hundred eighty-three".