33004421 has 8 divisors (see below), whose sum is σ = 33675264. Its totient is φ = 32339440.

The previous prime is 33004357. The next prime is 33004451. The reversal of 33004421 is 12440033.

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 33004421 - 2⁶ = 33004357 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 33004421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33004451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10940 + ... + 13626.

It is an arithmetic number, because the mean of its divisors is an integer number (4209408).

Almost surely, 2^33004421 is an apocalyptic number.

It is an amenable number.

33004421 is a deficient number, since it is larger than the sum of its proper divisors (670843).

33004421 is a wasteful number, since it uses less digits than its factorization.

33004421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2931.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 33004421 is about 5744.9474323095. The cubic root of 33004421 is about 320.7677561067.

Adding to 33004421 its reverse (12440033), we get a palindrome (45444454).

The spelling of 33004421 in words is "thirty-three million, four thousand, four hundred twenty-one".