33242789 has 4 divisors (see below), whose sum is σ = 33256524. Its totient is φ = 33229056.

The previous prime is 33242779. The next prime is 33242821. The reversal of 33242789 is 98724233.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18992164 + 14250625 = 4358^2 + 3775^2 .

It is a cyclic number.

It is not a de Polignac number, because 33242789 - 2¹² = 33238693 is a prime.

It is a super-2 number, since 2×33242789² = 2210166040997042, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33242719) 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, 2162 + ... + 8435.

It is an arithmetic number, because the mean of its divisors is an integer number (8314131).

Almost surely, 2^33242789 is an apocalyptic number.

It is an amenable number.

33242789 is a deficient number, since it is larger than the sum of its proper divisors (13735).

33242789 is a wasteful number, since it uses less digits than its factorization.

33242789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13734.

The product of its digits is 72576, while the sum is 38.

The square root of 33242789 is about 5765.6559904316. The cubic root of 33242789 is about 321.5381319825.

The spelling of 33242789 in words is "thirty-three million, two hundred forty-two thousand, seven hundred eighty-nine".