28184227 has 8 divisors (see below), whose sum is σ = 28662480. Its totient is φ = 27709440.

The previous prime is 28184209. The next prime is 28184237. The reversal of 28184227 is 72248182.

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

It is a cyclic number.

It is not a de Polignac number, because 28184227 - 2⁷ = 28184099 is a prime.

It is a Duffinian number.

28184227 is a modest number, since divided by 4227 gives 2818 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 28184192 and 28184201.

It is not an unprimeable number, because it can be changed into a prime (28184237) by changing a digit.

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, 19299 + ... + 20707.

It is an arithmetic number, because the mean of its divisors is an integer number (3582810).

Almost surely, 2^28184227 is an apocalyptic number.

28184227 is a deficient number, since it is larger than the sum of its proper divisors (478253).

28184227 is a wasteful number, since it uses less digits than its factorization.

28184227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1733.

The product of its digits is 14336, while the sum is 34.

The square root of 28184227 is about 5308.8818973490. The cubic root of 28184227 is about 304.3234200805.

The spelling of 28184227 in words is "twenty-eight million, one hundred eighty-four thousand, two hundred twenty-seven".