128227158 has 32 divisors (see below), whose sum is σ = 301713120. Its totient is φ = 40227840.

The previous prime is 128227157. The next prime is 128227171. The reversal of 128227158 is 851722821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128227153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68923 + ... + 70758.

It is an arithmetic number, because the mean of its divisors is an integer number (9428535).

Almost surely, 2^128227158 is an apocalyptic number.

128227158 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

128227158 is an abundant number, since it is smaller than the sum of its proper divisors (173485962).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128227158 is a wasteful number, since it uses less digits than its factorization.

128227158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139709 (or 139703 counting only the distinct ones).

The product of its digits is 17920, while the sum is 36.

The square root of 128227158 is about 11323.7431090607. The cubic root of 128227158 is about 504.2663699665.

Adding to 128227158 its reverse (851722821), we get a palindrome (979949979).

The spelling of 128227158 in words is "one hundred twenty-eight million, two hundred twenty-seven thousand, one hundred fifty-eight".