28305083 has 4 divisors (see below), whose sum is σ = 28495200. Its totient is φ = 28114968.

The previous prime is 28305071. The next prime is 28305097. The reversal of 28305083 is 38050382.

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 28305083 - 2⁸ = 28304827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28305583) 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, 94835 + ... + 95132.

It is an arithmetic number, because the mean of its divisors is an integer number (7123800).

Almost surely, 2^28305083 is an apocalyptic number.

28305083 is a deficient number, since it is larger than the sum of its proper divisors (190117).

28305083 is a wasteful number, since it uses less digits than its factorization.

28305083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190116.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 28305083 is about 5320.2521556783. The cubic root of 28305083 is about 304.7577867371.

The spelling of 28305083 in words is "twenty-eight million, three hundred five thousand, eighty-three".