28268327 has 4 divisors (see below), whose sum is σ = 28292040. Its totient is φ = 28244616.

The previous prime is 28268323. The next prime is 28268351. The reversal of 28268327 is 72386282.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28268327 - 2² = 28268323 is a prime.

It is a super-2 number, since 2×28268327² = 1598196622757858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28268323) 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, 9968 + ... + 12485.

It is an arithmetic number, because the mean of its divisors is an integer number (7073010).

Almost surely, 2^28268327 is an apocalyptic number.

28268327 is a deficient number, since it is larger than the sum of its proper divisors (23713).

28268327 is a wasteful number, since it uses less digits than its factorization.

28268327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23712.

The product of its digits is 64512, while the sum is 38.

The square root of 28268327 is about 5316.7966859755. The cubic root of 28268327 is about 304.6258136281.

The spelling of 28268327 in words is "twenty-eight million, two hundred sixty-eight thousand, three hundred twenty-seven".