28016313 has 12 divisors (see below), whose sum is σ = 40450320. Its totient is φ = 17240496.

The previous prime is 28016311. The next prime is 28016333. The reversal of 28016313 is 31361082.

It is not a de Polignac number, because 28016313 - 2¹ = 28016311 is a prime.

It is a super-2 number, since 2×28016313² = 1569827588227938, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28016311) 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 11 ways as a sum of consecutive naturals, for example, 27123 + ... + 28136.

It is an arithmetic number, because the mean of its divisors is an integer number (3370860).

Almost surely, 2^28016313 is an apocalyptic number.

It is an amenable number.

28016313 is a deficient number, since it is larger than the sum of its proper divisors (12434007).

28016313 is a wasteful number, since it uses less digits than its factorization.

28016313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55288 (or 55275 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 28016313 is about 5293.0438312941. The cubic root of 28016313 is about 303.7178570197.

Adding to 28016313 its reverse (31361082), we get a palindrome (59377395).

The spelling of 28016313 in words is "twenty-eight million, sixteen thousand, three hundred thirteen".