128881135 has 8 divisors (see below), whose sum is σ = 156776400. Its totient is φ = 101692224.

The previous prime is 128881127. The next prime is 128881147. The reversal of 128881135 is 531188821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 128881135 - 2³ = 128881127 is a prime.

It is a super-2 number, since 2×128881135² = 33220693917776450, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 128881094 and 128881103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176185 + ... + 176914.

It is an arithmetic number, because the mean of its divisors is an integer number (19597050).

Almost surely, 2^128881135 is an apocalyptic number.

128881135 is a deficient number, since it is larger than the sum of its proper divisors (27895265).

128881135 is an equidigital number, since it uses as much as digits as its factorization.

128881135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353177.

The product of its digits is 15360, while the sum is 37.

The square root of 128881135 is about 11352.5827457896. The cubic root of 128881135 is about 505.1221937421.

The spelling of 128881135 in words is "one hundred twenty-eight million, eight hundred eighty-one thousand, one hundred thirty-five".