33166228 has 6 divisors (see below), whose sum is σ = 58040906. Its totient is φ = 16583112.

The previous prime is 33166223. The next prime is 33166241. The reversal of 33166228 is 82266133.

It can be written as a sum of positive squares in only one way, i.e., 33154564 + 11664 = 5758^2 + 108^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 33166228.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33166223) 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 as a sum of consecutive naturals, namely, 4145775 + ... + 4145782.

Almost surely, 2^33166228 is an apocalyptic number.

It is an amenable number.

33166228 is a deficient number, since it is larger than the sum of its proper divisors (24874678).

33166228 is a wasteful number, since it uses less digits than its factorization.

33166228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8291561 (or 8291559 counting only the distinct ones).

The product of its digits is 10368, while the sum is 31.

The square root of 33166228 is about 5759.0127626183. The cubic root of 33166228 is about 321.2910989220.

The spelling of 33166228 in words is "thirty-three million, one hundred sixty-six thousand, two hundred twenty-eight".