28369585 has 8 divisors (see below), whose sum is σ = 34099560. Its totient is φ = 22658304.

The previous prime is 28369577. The next prime is 28369589. The reversal of 28369585 is 58596382.

It can be written as a sum of positive squares in 4 ways, for example, as 4545424 + 23824161 = 2132^2 + 4881^2 .

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 28369585 - 2³ = 28369577 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28369589) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1080 + ... + 7609.

It is an arithmetic number, because the mean of its divisors is an integer number (4262445).

Almost surely, 2^28369585 is an apocalyptic number.

It is an amenable number.

28369585 is a deficient number, since it is larger than the sum of its proper divisors (5729975).

28369585 is an equidigital number, since it uses as much as digits as its factorization.

28369585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9347.

The product of its digits is 518400, while the sum is 46.

The square root of 28369585 is about 5326.3106368292. The cubic root of 28369585 is about 304.9891064818.

It can be divided in two parts, 2836 and 9585, that added together give a palindrome (12421).

The spelling of 28369585 in words is "twenty-eight million, three hundred sixty-nine thousand, five hundred eighty-five".