28202313 has 8 divisors (see below), whose sum is σ = 38219776. Its totient is φ = 18493200.

The previous prime is 28202299. The next prime is 28202329. The reversal of 28202313 is 31320282.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28202313 - 2⁶ = 28202249 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28202313.

It is not an unprimeable number, because it can be changed into a prime (28202353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76873 + ... + 77238.

It is an arithmetic number, because the mean of its divisors is an integer number (4777472).

Almost surely, 2^28202313 is an apocalyptic number.

It is an amenable number.

28202313 is a deficient number, since it is larger than the sum of its proper divisors (10017463).

28202313 is a wasteful number, since it uses less digits than its factorization.

28202313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154175.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 28202313 is about 5310.5849960244. The cubic root of 28202313 is about 304.3885015943.

Adding to 28202313 its reverse (31320282), we get a palindrome (59522595).

The spelling of 28202313 in words is "twenty-eight million, two hundred two thousand, three hundred thirteen".