128133255 has 16 divisors (see below), whose sum is σ = 206244864. Its totient is φ = 67927200.

The previous prime is 128133251. The next prime is 128133263. The reversal of 128133255 is 552331821.

It is not a de Polignac number, because 128133255 - 2² = 128133251 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128133251) 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 in 15 ways as a sum of consecutive naturals, for example, 23071 + ... + 28080.

It is an arithmetic number, because the mean of its divisors is an integer number (12890304).

Almost surely, 2^128133255 is an apocalyptic number.

128133255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

128133255 is a deficient number, since it is larger than the sum of its proper divisors (78111609).

128133255 is a wasteful number, since it uses less digits than its factorization.

128133255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51326.

The product of its digits is 7200, while the sum is 30.

The square root of 128133255 is about 11319.5960616976. The cubic root of 128133255 is about 504.1432455330.

The spelling of 128133255 in words is "one hundred twenty-eight million, one hundred thirty-three thousand, two hundred fifty-five".