128867227 has 2 divisors, whose sum is σ = 128867228. Its totient is φ = 128867226.

The previous prime is 128867209. The next prime is 128867243. The reversal of 128867227 is 722768821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 128867227 - 2⁷ = 128867099 is a prime.

It is not a weakly prime, because it can be changed into another prime (128867267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64433613 + 64433614.

It is an arithmetic number, because the mean of its divisors is an integer number (64433614).

Almost surely, 2^128867227 is an apocalyptic number.

128867227 is a deficient number, since it is larger than the sum of its proper divisors (1).

128867227 is an equidigital number, since it uses as much as digits as its factorization.

128867227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 150528, while the sum is 43.

The square root of 128867227 is about 11351.9701814267. The cubic root of 128867227 is about 505.1040232726.

The spelling of 128867227 in words is "one hundred twenty-eight million, eight hundred sixty-seven thousand, two hundred twenty-seven".