33004013 has 4 divisors (see below), whose sum is σ = 37718880. Its totient is φ = 28289148.

The previous prime is 33004003. The next prime is 33004019. The reversal of 33004013 is 31040033.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 33004013 - 2¹⁸ = 32741869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33004019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2357423 + ... + 2357436.

It is an arithmetic number, because the mean of its divisors is an integer number (9429720).

Almost surely, 2^33004013 is an apocalyptic number.

It is an amenable number.

33004013 is a deficient number, since it is larger than the sum of its proper divisors (4714867).

33004013 is an equidigital number, since it uses as much as digits as its factorization.

33004013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4714866.

The product of its (nonzero) digits is 108, while the sum is 14.

The square root of 33004013 is about 5744.9119227365. The cubic root of 33004013 is about 320.7664343264.

Adding to 33004013 its reverse (31040033), we get a palindrome (64044046).

The spelling of 33004013 in words is "thirty-three million, four thousand, thirteen".