33151228 has 12 divisors (see below), whose sum is σ = 63288792. Its totient is φ = 15068720.

The previous prime is 33151213. The next prime is 33151229. The reversal of 33151228 is 82215133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33151229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 376675 + ... + 376762.

It is an arithmetic number, because the mean of its divisors is an integer number (5274066).

Almost surely, 2^33151228 is an apocalyptic number.

It is an amenable number.

33151228 is a deficient number, since it is larger than the sum of its proper divisors (30137564).

33151228 is a wasteful number, since it uses less digits than its factorization.

33151228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 753452 (or 753450 counting only the distinct ones).

The product of its digits is 1440, while the sum is 25.

The square root of 33151228 is about 5757.7103087946. The cubic root of 33151228 is about 321.2426551334.

The spelling of 33151228 in words is "thirty-three million, one hundred fifty-one thousand, two hundred twenty-eight".