33605228 has 12 divisors (see below), whose sum is σ = 58864680. Its totient is φ = 16786752.

The previous prime is 33605227. The next prime is 33605251. The reversal of 33605228 is 82250633.

It is a super-2 number, since 2×33605228² = 2258622697863968, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33605228.

It is not an unprimeable number, because it can be changed into a prime (33605227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1700 + ... + 8372.

It is an arithmetic number, because the mean of its divisors is an integer number (4905390).

Almost surely, 2^33605228 is an apocalyptic number.

It is an amenable number.

33605228 is a deficient number, since it is larger than the sum of its proper divisors (25259452).

33605228 is a wasteful number, since it uses less digits than its factorization.

33605228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7936 (or 7934 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 33605228 is about 5797.0016387784. The cubic root of 33605228 is about 322.7024644579.

It can be divided in two parts, 33605 and 228, that added together give a palindrome (33833).

The spelling of 33605228 in words is "thirty-three million, six hundred five thousand, two hundred twenty-eight".