33770228 has 36 divisors (see below), whose sum is σ = 63541632. Its totient is φ = 15699840.

The previous prime is 33770213. The next prime is 33770237. The reversal of 33770228 is 82207733.

It is a happy number.

It is a super-2 number, since 2×33770228² = 2280856598343968, which contains 22 as substring.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 33770194 and 33770203.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 151325 + ... + 151547.

Almost surely, 2^33770228 is an apocalyptic number.

It is an amenable number.

33770228 is a deficient number, since it is larger than the sum of its proper divisors (29771404).

33770228 is a wasteful number, since it uses less digits than its factorization.

33770228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392 (or 373 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 33770228 is about 5811.2157075779. The cubic root of 33770228 is about 323.2297534326.

The spelling of 33770228 in words is "thirty-three million, seven hundred seventy thousand, two hundred twenty-eight".