28254227 has 2 divisors, whose sum is σ = 28254228. Its totient is φ = 28254226.

The previous prime is 28254209. The next prime is 28254241. The reversal of 28254227 is 72245282.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28254227 - 2¹⁶ = 28188691 is a prime.

It is a super-3 number, since 3×28254227³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28254193 and 28254202.

It is not a weakly prime, because it can be changed into another prime (28254727) 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 as a sum of consecutive naturals, namely, 14127113 + 14127114.

It is an arithmetic number, because the mean of its divisors is an integer number (14127114).

Almost surely, 2^28254227 is an apocalyptic number.

28254227 is a deficient number, since it is larger than the sum of its proper divisors (1).

28254227 is an equidigital number, since it uses as much as digits as its factorization.

28254227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17920, while the sum is 32.

The square root of 28254227 is about 5315.4705342049. The cubic root of 28254227 is about 304.5751569537.

The spelling of 28254227 in words is "twenty-eight million, two hundred fifty-four thousand, two hundred twenty-seven".