28454227 has 2 divisors, whose sum is σ = 28454228. Its totient is φ = 28454226.

The previous prime is 28454213. The next prime is 28454263. The reversal of 28454227 is 72245482.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28454227 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28454192 and 28454201.

It is not a weakly prime, because it can be changed into another prime (28454927) 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 as a sum of consecutive naturals, namely, 14227113 + 14227114.

It is an arithmetic number, because the mean of its divisors is an integer number (14227114).

Almost surely, 2^28454227 is an apocalyptic number.

28454227 is a deficient number, since it is larger than the sum of its proper divisors (1).

28454227 is an equidigital number, since it uses as much as digits as its factorization.

28454227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35840, while the sum is 34.

The square root of 28454227 is about 5334.2503690772. The cubic root of 28454227 is about 305.2921218074.

The spelling of 28454227 in words is "twenty-eight million, four hundred fifty-four thousand, two hundred twenty-seven".