33226728 has 32 divisors (see below), whose sum is σ = 85095360. Its totient is φ = 10805120.

The previous prime is 33226727. The next prime is 33226729. The reversal of 33226728 is 82762233.

It is an interprime number because it is at equal distance from previous prime (33226727) and next prime (33226729).

It is a super-2 number, since 2×33226728² = 2208030907171968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33226723) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 15900 + ... + 17867.

It is an arithmetic number, because the mean of its divisors is an integer number (2659230).

Almost surely, 2^33226728 is an apocalyptic number.

It is an amenable number.

33226728 is an abundant number, since it is smaller than the sum of its proper divisors (51868632).

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

33226728 is a wasteful number, since it uses less digits than its factorization.

33226728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33817 (or 33813 counting only the distinct ones).

The product of its digits is 24192, while the sum is 33.

The square root of 33226728 is about 5764.2630057970. The cubic root of 33226728 is about 321.4863407419.

The spelling of 33226728 in words is "thirty-three million, two hundred twenty-six thousand, seven hundred twenty-eight".