28084645 has 8 divisors (see below), whose sum is σ = 33730560. Its totient is φ = 22448400.

The previous prime is 28084619. The next prime is 28084669. The reversal of 28084645 is 54648082.

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

It is not a de Polignac number, because 28084645 - 2²³ = 19696037 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8316 + ... + 11194.

It is an arithmetic number, because the mean of its divisors is an integer number (4216320).

Almost surely, 2^28084645 is an apocalyptic number.

It is an amenable number.

28084645 is a deficient number, since it is larger than the sum of its proper divisors (5645915).

28084645 is a wasteful number, since it uses less digits than its factorization.

28084645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4835.

The product of its (nonzero) digits is 61440, while the sum is 37.

The square root of 28084645 is about 5299.4947872415. The cubic root of 28084645 is about 303.9645799280.

The spelling of 28084645 in words is "twenty-eight million, eighty-four thousand, six hundred forty-five".