33487228 has 12 divisors (see below), whose sum is σ = 60623640. Its totient is φ = 16166192.

The previous prime is 33487219. The next prime is 33487247. The reversal of 33487228 is 82278433.

It is a happy number.

It is a super-2 number, since 2×33487228² = 2242788878247968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144226 + ... + 144457.

It is an arithmetic number, because the mean of its divisors is an integer number (5051970).

Almost surely, 2^33487228 is an apocalyptic number.

It is an amenable number.

33487228 is a deficient number, since it is larger than the sum of its proper divisors (27136412).

33487228 is a wasteful number, since it uses less digits than its factorization.

33487228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288716 (or 288714 counting only the distinct ones).

The product of its digits is 64512, while the sum is 37.

The square root of 33487228 is about 5786.8150134595. The cubic root of 33487228 is about 322.3243134998.

The spelling of 33487228 in words is "thirty-three million, four hundred eighty-seven thousand, two hundred twenty-eight".