33421866 has 8 divisors (see below), whose sum is σ = 66843744. Its totient is φ = 11140620.

The previous prime is 33421849. The next prime is 33421867. The reversal of 33421866 is 66812433.

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

33421866 is an admirable number.

It is a super-2 number, since 2×33421866² = 2234042253843912, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33421867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2785150 + ... + 2785161.

It is an arithmetic number, because the mean of its divisors is an integer number (8355468).

Almost surely, 2^33421866 is an apocalyptic number.

33421866 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.

33421866 is a wasteful number, since it uses less digits than its factorization.

33421866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5570316.

The product of its digits is 20736, while the sum is 33.

The square root of 33421866 is about 5781.1647615338. The cubic root of 33421866 is about 322.1144674884.

The spelling of 33421866 in words is "thirty-three million, four hundred twenty-one thousand, eight hundred sixty-six".