33775228 has 12 divisors (see below), whose sum is σ = 60704392. Its totient is φ = 16431120.

The previous prime is 33775223. The next prime is 33775229. The reversal of 33775228 is 82257733.

33775228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×33775228² = 2281532052903968, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33775223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113958 + ... + 114253.

Almost surely, 2^33775228 is an apocalyptic number.

It is an amenable number.

33775228 is a deficient number, since it is larger than the sum of its proper divisors (26929164).

33775228 is a wasteful number, since it uses less digits than its factorization.

33775228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228252 (or 228250 counting only the distinct ones).

The product of its digits is 70560, while the sum is 37.

The square root of 33775228 is about 5811.6458942368. The cubic root of 33775228 is about 323.2457050475.

The spelling of 33775228 in words is "thirty-three million, seven hundred seventy-five thousand, two hundred twenty-eight".