33673381 has 4 divisors (see below), whose sum is σ = 38483872. Its totient is φ = 28862892.

The previous prime is 33673363. The next prime is 33673399. The reversal of 33673381 is 18337633.

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, and also an emirpimes, since its reverse is a distinct semiprime: 18337633 = 229 ⋅80077.

It is an interprime number because it is at equal distance from previous prime (33673363) and next prime (33673399).

It is a cyclic number.

It is not a de Polignac number, because 33673381 - 2⁷ = 33673253 is a prime.

It is a super-2 number, since 2×33673381² = 2267793175942322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33673361) 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, 2405235 + ... + 2405248.

It is an arithmetic number, because the mean of its divisors is an integer number (9620968).

Almost surely, 2^33673381 is an apocalyptic number.

It is an amenable number.

33673381 is a deficient number, since it is larger than the sum of its proper divisors (4810491).

33673381 is an equidigital number, since it uses as much as digits as its factorization.

33673381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4810490.

The product of its digits is 27216, while the sum is 34.

The square root of 33673381 is about 5802.8769588886. The cubic root of 33673381 is about 322.9204691295.

The spelling of 33673381 in words is "thirty-three million, six hundred seventy-three thousand, three hundred eighty-one".