28449085 has 16 divisors (see below), whose sum is σ = 39513600. Its totient is φ = 19259136.

The previous prime is 28449077. The next prime is 28449097. The reversal of 28449085 is 58094482.

It is a cyclic number.

It is not a de Polignac number, because 28449085 - 2³ = 28449077 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2380 + ... + 7909.

It is an arithmetic number, because the mean of its divisors is an integer number (2469600).

Almost surely, 2^28449085 is an apocalyptic number.

It is an amenable number.

28449085 is a deficient number, since it is larger than the sum of its proper divisors (11064515).

28449085 is a wasteful number, since it uses less digits than its factorization.

28449085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10380.

The product of its (nonzero) digits is 92160, while the sum is 40.

The square root of 28449085 is about 5333.7683676740. The cubic root of 28449085 is about 305.2737307888.

The spelling of 28449085 in words is "twenty-eight million, four hundred forty-nine thousand, eighty-five".