21834195 has 8 divisors (see below), whose sum is σ = 34934736. Its totient is φ = 11644896.

The previous prime is 21834191. The next prime is 21834203. The reversal of 21834195 is 59143812.

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

It is not a de Polignac number, because 21834195 - 2² = 21834191 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (21834191) by changing a digit.

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, 727792 + ... + 727821.

It is an arithmetic number, because the mean of its divisors is an integer number (4366842).

Almost surely, 2^21834195 is an apocalyptic number.

21834195 is a deficient number, since it is larger than the sum of its proper divisors (13100541).

21834195 is a wasteful number, since it uses less digits than its factorization.

21834195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1455621.

The product of its digits is 8640, while the sum is 33.

The square root of 21834195 is about 4672.7074592788. The cubic root of 21834195 is about 279.4982297478.

The spelling of 21834195 in words is "twenty-one million, eight hundred thirty-four thousand, one hundred ninety-five".