33228388 has 12 divisors (see below), whose sum is σ = 58214380. Its totient is φ = 16595712.

The previous prime is 33228361. The next prime is 33228413. The reversal of 33228388 is 88382233.

It can be written as a sum of positive squares in 2 ways, for example, as 8248384 + 24980004 = 2872^2 + 4998^2 .

It is a super-2 number, since 2×33228388² = 2208251538157088, which contains 22 as substring.

It is an unprimeable number.

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, 81 + ... + 8152.

Almost surely, 2^33228388 is an apocalyptic number.

It is an amenable number.

33228388 is a deficient number, since it is larger than the sum of its proper divisors (24985992).

33228388 is a wasteful number, since it uses less digits than its factorization.

33228388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9246 (or 9244 counting only the distinct ones).

The product of its digits is 55296, while the sum is 37.

The square root of 33228388 is about 5764.4069946526. The cubic root of 33228388 is about 321.4916944483.

The spelling of 33228388 in words is "thirty-three million, two hundred twenty-eight thousand, three hundred eighty-eight".