28668265 has 8 divisors (see below), whose sum is σ = 34433280. Its totient is φ = 22913712.

The previous prime is 28668257. The next prime is 28668287. The reversal of 28668265 is 56286682.

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

It is a cyclic number.

It is not a de Polignac number, because 28668265 - 2³ = 28668257 is a prime.

It is a super-2 number, since 2×28668265² = 1643738836220450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6006 + ... + 9664.

It is an arithmetic number, because the mean of its divisors is an integer number (4304160).

Almost surely, 2^28668265 is an apocalyptic number.

It is an amenable number.

28668265 is a deficient number, since it is larger than the sum of its proper divisors (5765015).

28668265 is a wasteful number, since it uses less digits than its factorization.

28668265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5231.

The product of its digits is 276480, while the sum is 43.

The square root of 28668265 is about 5354.2753944862. The cubic root of 28668265 is about 306.0556984917.

The spelling of 28668265 in words is "twenty-eight million, six hundred sixty-eight thousand, two hundred sixty-five".