28574243 has 4 divisors (see below), whose sum is σ = 28841400. Its totient is φ = 28307088.

The previous prime is 28574209. The next prime is 28574267. The reversal of 28574243 is 34247582.

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

It is a cyclic number.

It is not a de Polignac number, because 28574243 - 2⁶ = 28574179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28574443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133418 + ... + 133631.

It is an arithmetic number, because the mean of its divisors is an integer number (7210350).

Almost surely, 2^28574243 is an apocalyptic number.

28574243 is a deficient number, since it is larger than the sum of its proper divisors (267157).

28574243 is a wasteful number, since it uses less digits than its factorization.

28574243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267156.

The product of its digits is 53760, while the sum is 35.

The square root of 28574243 is about 5345.4880974519. The cubic root of 28574243 is about 305.7207464144.

The spelling of 28574243 in words is "twenty-eight million, five hundred seventy-four thousand, two hundred forty-three".