33255220 has 12 divisors (see below), whose sum is σ = 69836004. Its totient is φ = 13302080.

The previous prime is 33255203. The next prime is 33255227. The reversal of 33255220 is 2255233.

It can be written as a sum of positive squares in 2 ways, for example, as 11464996 + 21790224 = 3386^2 + 4668^2 .

It is a super-2 number, since 2×33255220² = 2211819314496800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33255191 and 33255200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33255227) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 831361 + ... + 831400.

It is an arithmetic number, because the mean of its divisors is an integer number (5819667).

Almost surely, 2^33255220 is an apocalyptic number.

It is an amenable number.

33255220 is an abundant number, since it is smaller than the sum of its proper divisors (36580784).

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

33255220 is a wasteful number, since it uses less digits than its factorization.

33255220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1662770 (or 1662768 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 22.

The square root of 33255220 is about 5766.7339109760. The cubic root of 33255220 is about 321.5782062614.

The spelling of 33255220 in words is "thirty-three million, two hundred fifty-five thousand, two hundred twenty".