21833241 has 8 divisors (see below), whose sum is σ = 29304384. Its totient is φ = 14458800.

The previous prime is 21833237. The next prime is 21833257. The reversal of 21833241 is 14233812.

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

It is not a de Polignac number, because 21833241 - 2² = 21833237 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21833291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23646 + ... + 24551.

It is an arithmetic number, because the mean of its divisors is an integer number (3663048).

Almost surely, 2^21833241 is an apocalyptic number.

It is an amenable number.

21833241 is a deficient number, since it is larger than the sum of its proper divisors (7471143).

21833241 is a wasteful number, since it uses less digits than its factorization.

21833241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48351.

The product of its digits is 1152, while the sum is 24.

The square root of 21833241 is about 4672.6053760188. The cubic root of 21833241 is about 279.4941589895.

The spelling of 21833241 in words is "twenty-one million, eight hundred thirty-three thousand, two hundred forty-one".