33128265 has 16 divisors (see below), whose sum is σ = 53121600. Its totient is φ = 17629632.

The previous prime is 33128201. The next prime is 33128273. The reversal of 33128265 is 56282133.

It is not a de Polignac number, because 33128265 - 2⁶ = 33128201 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5466 + ... + 9804.

It is an arithmetic number, because the mean of its divisors is an integer number (3320100).

Almost surely, 2^33128265 is an apocalyptic number.

It is an amenable number.

33128265 is a deficient number, since it is larger than the sum of its proper divisors (19993335).

33128265 is a wasteful number, since it uses less digits than its factorization.

33128265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4856.

The product of its digits is 8640, while the sum is 30.

The square root of 33128265 is about 5755.7158546961. The cubic root of 33128265 is about 321.1684658358.

The spelling of 33128265 in words is "thirty-three million, one hundred twenty-eight thousand, two hundred sixty-five".