21834833 has 2 divisors, whose sum is σ = 21834834. Its totient is φ = 21834832.

The previous prime is 21834823. The next prime is 21834859. The reversal of 21834833 is 33843812.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16507969 + 5326864 = 4063^2 + 2308^2 .

It is a cyclic number.

It is not a de Polignac number, because 21834833 - 2⁸ = 21834577 is a prime.

It is equal to p_1379435 and since 21834833 and 1379435 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21834833.

It is not a weakly prime, because it can be changed into another prime (21834803) 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 as a sum of consecutive naturals, namely, 10917416 + 10917417.

It is an arithmetic number, because the mean of its divisors is an integer number (10917417).

Almost surely, 2^21834833 is an apocalyptic number.

It is an amenable number.

21834833 is a deficient number, since it is larger than the sum of its proper divisors (1).

21834833 is an equidigital number, since it uses as much as digits as its factorization.

21834833 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 32.

The square root of 21834833 is about 4672.7757275521. The cubic root of 21834833 is about 279.5009520546.

The spelling of 21834833 in words is "twenty-one million, eight hundred thirty-four thousand, eight hundred thirty-three".