33087228 has 24 divisors (see below), whose sum is σ = 77484288. Its totient is φ = 10988976.

The previous prime is 33087221. The next prime is 33087239. The reversal of 33087228 is 82278033.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33087221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1476 + ... + 8267.

It is an arithmetic number, because the mean of its divisors is an integer number (3228512).

Almost surely, 2^33087228 is an apocalyptic number.

It is an amenable number.

33087228 is an abundant number, since it is smaller than the sum of its proper divisors (44397060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

33087228 is a wasteful number, since it uses less digits than its factorization.

33087228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10033 (or 10031 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 33087228 is about 5752.1498589658. The cubic root of 33087228 is about 321.0357972908.

The spelling of 33087228 in words is "thirty-three million, eighty-seven thousand, two hundred twenty-eight".