33001993 has 8 divisors (see below), whose sum is σ = 34899200. Its totient is φ = 31120848.

The previous prime is 33001979. The next prime is 33002041. The reversal of 33001993 is 39910033.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33001993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (33001933) by changing a digit.

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, 343 + ... + 8131.

It is an arithmetic number, because the mean of its divisors is an integer number (4362400).

Almost surely, 2^33001993 is an apocalyptic number.

It is an amenable number.

33001993 is a deficient number, since it is larger than the sum of its proper divisors (1897207).

33001993 is a wasteful number, since it uses less digits than its factorization.

33001993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8031.

The product of its (nonzero) digits is 2187, while the sum is 28.

The square root of 33001993 is about 5744.7361123032. The cubic root of 33001993 is about 320.7598900574.

The spelling of 33001993 in words is "thirty-three million, one thousand, nine hundred ninety-three".