33133987 has 8 divisors (see below), whose sum is σ = 33799680. Its totient is φ = 32471880.

The previous prime is 33133949. The next prime is 33133993. The reversal of 33133987 is 78933133.

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 33133987 - 2¹⁵ = 33101219 is a prime.

It is a super-2 number, since 2×33133987² = 2195722189032338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33133927) 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, 24778 + ... + 26080.

It is an arithmetic number, because the mean of its divisors is an integer number (4224960).

Almost surely, 2^33133987 is an apocalyptic number.

33133987 is a deficient number, since it is larger than the sum of its proper divisors (665693).

33133987 is a wasteful number, since it uses less digits than its factorization.

33133987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1793.

The product of its digits is 40824, while the sum is 37.

The square root of 33133987 is about 5756.2129043322. The cubic root of 33133987 is about 321.1869557886.

The spelling of 33133987 in words is "thirty-three million, one hundred thirty-three thousand, nine hundred eighty-seven".