33404445 has 24 divisors (see below), whose sum is σ = 58471296. Its totient is φ = 17640288.

The previous prime is 33404411. The next prime is 33404447. The reversal of 33404445 is 54440433.

It is not a de Polignac number, because 33404445 - 2¹⁶ = 33338909 is a prime.

It is a super-2 number, since 2×33404445² = 2231713891516050, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33404447) 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 23 ways as a sum of consecutive naturals, for example, 1032 + ... + 8238.

It is an arithmetic number, because the mean of its divisors is an integer number (2436304).

Almost surely, 2^33404445 is an apocalyptic number.

It is an amenable number.

33404445 is a deficient number, since it is larger than the sum of its proper divisors (25066851).

33404445 is a wasteful number, since it uses less digits than its factorization.

33404445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7321 (or 7318 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 27.

The square root of 33404445 is about 5779.6578618461. The cubic root of 33404445 is about 322.0584908470.

Adding to 33404445 its reverse (54440433), we get a palindrome (87844878).

The spelling of 33404445 in words is "thirty-three million, four hundred four thousand, four hundred forty-five".