28227569 has 8 divisors (see below), whose sum is σ = 29016960. Its totient is φ = 27449136.

The previous prime is 28227523. The next prime is 28227649. The reversal of 28227569 is 96572282.

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 28227569 - 2¹² = 28223473 is a prime.

It is a super-2 number, since 2×28227569² = 1593591303299522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28227169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2627 + ... + 7959.

It is an arithmetic number, because the mean of its divisors is an integer number (3627120).

Almost surely, 2^28227569 is an apocalyptic number.

It is an amenable number.

28227569 is a deficient number, since it is larger than the sum of its proper divisors (789391).

28227569 is an equidigital number, since it uses as much as digits as its factorization.

28227569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5479.

The product of its digits is 120960, while the sum is 41.

The square root of 28227569 is about 5312.9623563507. The cubic root of 28227569 is about 304.4793374335.

The spelling of 28227569 in words is "twenty-eight million, two hundred twenty-seven thousand, five hundred sixty-nine".