28321283 has 8 divisors (see below), whose sum is σ = 29239056. Its totient is φ = 27414400.

The previous prime is 28321253. The next prime is 28321301. The reversal of 28321283 is 38212382.

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 28321283 - 2¹² = 28317187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28321253) 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, 2735 + ... + 8007.

It is an arithmetic number, because the mean of its divisors is an integer number (3654882).

Almost surely, 2^28321283 is an apocalyptic number.

28321283 is a deficient number, since it is larger than the sum of its proper divisors (917773).

28321283 is a wasteful number, since it uses less digits than its factorization.

28321283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5445.

The product of its digits is 4608, while the sum is 29.

The square root of 28321283 is about 5321.7744221265. The cubic root of 28321283 is about 304.8159168682.

The spelling of 28321283 in words is "twenty-eight million, three hundred twenty-one thousand, two hundred eighty-three".