33481218 has 16 divisors (see below), whose sum is σ = 67021056. Its totient is φ = 11150640.

The previous prime is 33481193. The next prime is 33481247. The reversal of 33481218 is 81218433.

It is a super-2 number, since 2×33481218² = 2241983917527048, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

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, 9408 + ... + 12468.

It is an arithmetic number, because the mean of its divisors is an integer number (4188816).

Almost surely, 2^33481218 is an apocalyptic number.

33481218 is an abundant number, since it is smaller than the sum of its proper divisors (33539838).

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

33481218 is a wasteful number, since it uses less digits than its factorization.

33481218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4889.

The product of its digits is 4608, while the sum is 30.

The square root of 33481218 is about 5786.2957062356. The cubic root of 33481218 is about 322.3050296799.

The spelling of 33481218 in words is "thirty-three million, four hundred eighty-one thousand, two hundred eighteen".