128585276 has 12 divisors (see below), whose sum is σ = 225103872. Its totient is φ = 64269888.

The previous prime is 128585273. The next prime is 128585287. The reversal of 128585276 is 672585821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128585273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17861 + ... + 24003.

It is an arithmetic number, because the mean of its divisors is an integer number (18758656).

Almost surely, 2^128585276 is an apocalyptic number.

It is an amenable number.

128585276 is a deficient number, since it is larger than the sum of its proper divisors (96518596).

128585276 is a wasteful number, since it uses less digits than its factorization.

128585276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11380 (or 11378 counting only the distinct ones).

The product of its digits is 268800, while the sum is 44.

The square root of 128585276 is about 11339.5447880415. The cubic root of 128585276 is about 504.7353787950.

The spelling of 128585276 in words is "one hundred twenty-eight million, five hundred eighty-five thousand, two hundred seventy-six".