128235276 has 36 divisors (see below), whose sum is σ = 349086192. Its totient is φ = 39456864.

The previous prime is 128235271. The next prime is 128235287. The reversal of 128235276 is 672532821.

128235276 is a `hidden beast` number, since 128 + 2 + 3 + 527 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 128235276.

It is not an unprimeable number, because it can be changed into a prime (128235271) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 136536 + ... + 137471.

Almost surely, 2^128235276 is an apocalyptic number.

It is an amenable number.

128235276 is an abundant number, since it is smaller than the sum of its proper divisors (220850916).

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

128235276 is a wasteful number, since it uses less digits than its factorization.

128235276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274030 (or 274025 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 128235276 is about 11324.1015537658. The cubic root of 128235276 is about 504.2770113628.

The spelling of 128235276 in words is "one hundred twenty-eight million, two hundred thirty-five thousand, two hundred seventy-six".