28444585 has 16 divisors (see below), whose sum is σ = 36933120. Its totient is φ = 20905920.

The previous prime is 28444573. The next prime is 28444589. The reversal of 28444585 is 58544482.

It is a happy number.

It is not a de Polignac number, because 28444585 - 2¹¹ = 28442537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28444589) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14620 + ... + 16450.

It is an arithmetic number, because the mean of its divisors is an integer number (2308320).

Almost surely, 2^28444585 is an apocalyptic number.

It is an amenable number.

28444585 is a deficient number, since it is larger than the sum of its proper divisors (8488535).

28444585 is a wasteful number, since it uses less digits than its factorization.

28444585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2088.

The product of its digits is 204800, while the sum is 40.

The square root of 28444585 is about 5333.3465104004. The cubic root of 28444585 is about 305.2576341466.

The spelling of 28444585 in words is "twenty-eight million, four hundred forty-four thousand, five hundred eighty-five".