33040445 has 8 divisors (see below), whose sum is σ = 40720344. Its totient is φ = 25717824.

The previous prime is 33040429. The next prime is 33040459. The reversal of 33040445 is 54404033.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5812921 + 27227524 = 2411^2 + 5218^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 33040445 - 2⁴ = 33040429 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 33040445.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89114 + ... + 89483.

It is an arithmetic number, because the mean of its divisors is an integer number (5090043).

Almost surely, 2^33040445 is an apocalyptic number.

It is an amenable number.

33040445 is a deficient number, since it is larger than the sum of its proper divisors (7679899).

33040445 is a wasteful number, since it uses less digits than its factorization.

33040445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178639.

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 33040445 is about 5748.0818539753. The cubic root of 33040445 is about 320.8844186190.

Adding to 33040445 its reverse (54404033), we get a palindrome (87444478).

The spelling of 33040445 in words is "thirty-three million, forty thousand, four hundred forty-five".