28014307 has 4 divisors (see below), whose sum is σ = 28025296. Its totient is φ = 28003320.

The previous prime is 28014281. The next prime is 28014313. The reversal of 28014307 is 70341082.

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 is a cyclic number.

It is not a de Polignac number, because 28014307 - 2⁷ = 28014179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28014347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 538 + ... + 7504.

It is an arithmetic number, because the mean of its divisors is an integer number (7006324).

Almost surely, 2^28014307 is an apocalyptic number.

28014307 is a deficient number, since it is larger than the sum of its proper divisors (10989).

28014307 is an equidigital number, since it uses as much as digits as its factorization.

28014307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10988.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 28014307 is about 5292.8543339110. The cubic root of 28014307 is about 303.7106079983.

Adding to 28014307 its reverse (70341082), we get a palindrome (98355389).

The spelling of 28014307 in words is "twenty-eight million, fourteen thousand, three hundred seven".