21833334 has 16 divisors (see below), whose sum is σ = 48518640. Its totient is φ = 7277760.

The previous prime is 21833323. The next prime is 21833341. The reversal of 21833334 is 43333812.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 21833298 and 21833307.

It is a congruent 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, 202107 + ... + 202214.

It is an arithmetic number, because the mean of its divisors is an integer number (3032415).

Almost surely, 2^21833334 is an apocalyptic number.

21833334 is an abundant number, since it is smaller than the sum of its proper divisors (26685306).

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

21833334 is a wasteful number, since it uses less digits than its factorization.

21833334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404332 (or 404326 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

The square root of 21833334 is about 4672.6153276297. The cubic root of 21833334 is about 279.4945558296.

The spelling of 21833334 in words is "twenty-one million, eight hundred thirty-three thousand, three hundred thirty-four".