28000313 has 8 divisors (see below), whose sum is σ = 30636576. Its totient is φ = 25379200.

The previous prime is 28000237. The next prime is 28000321. The reversal of 28000313 is 31300082.

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

It is not a de Polignac number, because 28000313 - 2¹² = 27996217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28000291 and 28000300.

It is not an unprimeable number, because it can be changed into a prime (28000363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 278 + ... + 7488.

It is an arithmetic number, because the mean of its divisors is an integer number (3829572).

Almost surely, 2^28000313 is an apocalyptic number.

It is an amenable number.

28000313 is a deficient number, since it is larger than the sum of its proper divisors (2636263).

28000313 is a wasteful number, since it uses less digits than its factorization.

28000313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7575.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 28000313 is about 5291.5321977665. The cubic root of 28000313 is about 303.6600286742.

Adding to 28000313 its reverse (31300082), we get a palindrome (59300395).

The spelling of 28000313 in words is "twenty-eight million, three hundred thirteen", and thus it is an aban number.