28269085 has 8 divisors (see below), whose sum is σ = 36532440. Its totient is φ = 20875584.

The previous prime is 28269077. The next prime is 28269091. The reversal of 28269085 is 58096282.

It can be written as a sum of positive squares in 4 ways, for example, as 1674436 + 26594649 = 1294^2 + 5157^2 .

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 28269085 - 2³ = 28269077 is a prime.

It is a congruent number.

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, 217390 + ... + 217519.

It is an arithmetic number, because the mean of its divisors is an integer number (4566555).

Almost surely, 2^28269085 is an apocalyptic number.

It is an amenable number.

28269085 is a deficient number, since it is larger than the sum of its proper divisors (8263355).

28269085 is a wasteful number, since it uses less digits than its factorization.

28269085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434927.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 28269085 is about 5316.8679690209. The cubic root of 28269085 is about 304.6285363963.

It can be divided in two parts, 2826 and 9085, that added together give a palindrome (11911).

The spelling of 28269085 in words is "twenty-eight million, two hundred sixty-nine thousand, eighty-five".