28268927 has 4 divisors (see below), whose sum is σ = 28442520. Its totient is φ = 28095336.

The previous prime is 28268917. The next prime is 28268951. The reversal of 28268927 is 72986282.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28268927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28268917) 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, 86552 + ... + 86877.

It is an arithmetic number, because the mean of its divisors is an integer number (7110630).

Almost surely, 2^28268927 is an apocalyptic number.

28268927 is a deficient number, since it is larger than the sum of its proper divisors (173593).

28268927 is a wasteful number, since it uses less digits than its factorization.

28268927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173592.

The product of its digits is 193536, while the sum is 44.

The square root of 28268927 is about 5316.8531106285. The cubic root of 28268927 is about 304.6279688576.

The spelling of 28268927 in words is "twenty-eight million, two hundred sixty-eight thousand, nine hundred twenty-seven".