33133866 has 8 divisors (see below), whose sum is σ = 66267744. Its totient is φ = 11044620.

The previous prime is 33133831. The next prime is 33133879. The reversal of 33133866 is 66833133.

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

33133866 is an admirable number.

It is a super-2 number, since 2×33133866² = 2195706152211912, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2761150 + ... + 2761161.

It is an arithmetic number, because the mean of its divisors is an integer number (8283468).

Almost surely, 2^33133866 is an apocalyptic number.

33133866 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

33133866 is a wasteful number, since it uses less digits than its factorization.

33133866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5522316.

The product of its digits is 23328, while the sum is 33.

The square root of 33133866 is about 5756.2023939399. The cubic root of 33133866 is about 321.1865648137.

Adding to 33133866 its reverse (66833133), we get a palindrome (99966999).

The spelling of 33133866 in words is "thirty-three million, one hundred thirty-three thousand, eight hundred sixty-six".