28568269 has 4 divisors (see below), whose sum is σ = 28793344. Its totient is φ = 28343196.

The previous prime is 28568263. The next prime is 28568303. The reversal of 28568269 is 96286582.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28568269 - 2³ = 28568261 is a prime.

It is a super-2 number, since 2×28568269² = 1632291987312722, 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 (28568261) 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, 112347 + ... + 112600.

It is an arithmetic number, because the mean of its divisors is an integer number (7198336).

Almost surely, 2^28568269 is an apocalyptic number.

It is an amenable number.

28568269 is a deficient number, since it is larger than the sum of its proper divisors (225075).

28568269 is a wasteful number, since it uses less digits than its factorization.

28568269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225074.

The product of its digits is 414720, while the sum is 46.

The square root of 28568269 is about 5344.9292792328. The cubic root of 28568269 is about 305.6994393112.

The spelling of 28568269 in words is "twenty-eight million, five hundred sixty-eight thousand, two hundred sixty-nine".