28584845 has 8 divisors (see below), whose sum is σ = 34402200. Its totient is φ = 22800960.

The previous prime is 28584827. The next prime is 28584859. The reversal of 28584845 is 54848582.

It can be written as a sum of positive squares in 4 ways, for example, as 90601 + 28494244 = 301^2 + 5338^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28584845 - 2²⁴ = 11807629 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28584796 and 28584805.

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 7 ways as a sum of consecutive naturals, for example, 6446 + ... + 9935.

It is an arithmetic number, because the mean of its divisors is an integer number (4300275).

Almost surely, 2^28584845 is an apocalyptic number.

It is an amenable number.

28584845 is a deficient number, since it is larger than the sum of its proper divisors (5817355).

28584845 is a wasteful number, since it uses less digits than its factorization.

28584845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16735.

The product of its digits is 409600, while the sum is 44.

The square root of 28584845 is about 5346.4796829316. The cubic root of 28584845 is about 305.7585526136.

The spelling of 28584845 in words is "twenty-eight million, five hundred eighty-four thousand, eight hundred forty-five".