21335414 has 8 divisors (see below), whose sum is σ = 32040360. Its totient is φ = 10655296.

The previous prime is 21335411. The next prime is 21335437. The reversal of 21335414 is 41453312.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 21335414.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21335411) 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 3 ways as a sum of consecutive naturals, for example, 3884 + ... + 7599.

It is an arithmetic number, because the mean of its divisors is an integer number (4005045).

Almost surely, 2^21335414 is an apocalyptic number.

21335414 is a deficient number, since it is larger than the sum of its proper divisors (10704946).

21335414 is a wasteful number, since it uses less digits than its factorization.

21335414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12414.

The product of its digits is 1440, while the sum is 23.

The square root of 21335414 is about 4619.0273867991. The cubic root of 21335414 is about 277.3535260327.

Adding to 21335414 its reverse (41453312), we get a palindrome (62788726).

The spelling of 21335414 in words is "twenty-one million, three hundred thirty-five thousand, four hundred fourteen".