233285128 has 16 divisors (see below), whose sum is σ = 440347500. Its totient is φ = 115859136.

The previous prime is 233285099. The next prime is 233285131. The reversal of 233285128 is 821582332.

233285128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 220166244 + 13118884 = 14838^2 + 3622^2 .

It is a junction number, because it is equal to n+sod(n) for n = 233285093 and 233285102.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96663 + ... + 99046.

Almost surely, 2^233285128 is an apocalyptic number.

It is an amenable number.

233285128 is a deficient number, since it is larger than the sum of its proper divisors (207062372).

233285128 is a wasteful number, since it uses less digits than its factorization.

233285128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195864 (or 195860 counting only the distinct ones).

The product of its digits is 23040, while the sum is 34.

The square root of 233285128 is about 15273.6743450946. The cubic root of 233285128 is about 615.5958514479.

The spelling of 233285128 in words is "two hundred thirty-three million, two hundred eighty-five thousand, one hundred twenty-eight".