28516333 has 4 divisors (see below), whose sum is σ = 28527228. Its totient is φ = 28505440.

The previous prime is 28516331. The next prime is 28516337. The reversal of 28516333 is 33361582.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 22155849 + 6360484 = 4707^2 + 2522^2 .

It is a cyclic number.

It is not a de Polignac number, because 28516333 - 2¹ = 28516331 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28516295 and 28516304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28516331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1113 + ... + 7633.

It is an arithmetic number, because the mean of its divisors is an integer number (7131807).

Almost surely, 2^28516333 is an apocalyptic number.

It is an amenable number.

28516333 is a deficient number, since it is larger than the sum of its proper divisors (10895).

28516333 is an equidigital number, since it uses as much as digits as its factorization.

28516333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10894.

The product of its digits is 12960, while the sum is 31.

The square root of 28516333 is about 5340.0686325178. The cubic root of 28516333 is about 305.5140770485.

The spelling of 28516333 in words is "twenty-eight million, five hundred sixteen thousand, three hundred thirty-three".