28853089 has 4 divisors (see below), whose sum is σ = 28977156. Its totient is φ = 28729024.

The previous prime is 28853087. The next prime is 28853093. The reversal of 28853089 is 98035882.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6838225 + 22014864 = 2615^2 + 4692^2 .

It is a cyclic number.

It is not a de Polignac number, because 28853089 - 2¹ = 28853087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28853087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61684 + ... + 62149.

It is an arithmetic number, because the mean of its divisors is an integer number (7244289).

Almost surely, 2^28853089 is an apocalyptic number.

It is an amenable number.

28853089 is a deficient number, since it is larger than the sum of its proper divisors (124067).

28853089 is a wasteful number, since it uses less digits than its factorization.

28853089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124066.

The product of its (nonzero) digits is 138240, while the sum is 43.

The square root of 28853089 is about 5371.5071441822. The cubic root of 28853089 is about 306.7120027230.

The spelling of 28853089 in words is "twenty-eight million, eight hundred fifty-three thousand, eighty-nine".