128227 has 4 divisors (see below), whose sum is σ = 139896. Its totient is φ = 116560.

The previous prime is 128221. The next prime is 128237. The reversal of 128227 is 722821.

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 128227 - 2⁷ = 128099 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128198 and 128207.

It is not an unprimeable number, because it can be changed into a prime (128221) 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 in 3 ways as a sum of consecutive naturals, for example, 5818 + ... + 5839.

It is an arithmetic number, because the mean of its divisors is an integer number (34974).

2¹²⁸²²⁷ is an apocalyptic number.

128227 is a deficient number, since it is larger than the sum of its proper divisors (11669).

128227 is a wasteful number, since it uses less digits than its factorization.

128227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11668.

The product of its digits is 448, while the sum is 22.

The square root of 128227 is about 358.0879780166. The cubic root of 128227 is about 50.4266162849.

The spelling of 128227 in words is "one hundred twenty-eight thousand, two hundred twenty-seven".