21414841 has 8 divisors (see below), whose sum is σ = 24508800. Its totient is φ = 18329568.

The previous prime is 21414803. The next prime is 21414853. The reversal of 21414841 is 14841412.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21414841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21414871) 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, 4485 + ... + 7933.

It is an arithmetic number, because the mean of its divisors is an integer number (3063600).

Almost surely, 2^21414841 is an apocalyptic number.

It is an amenable number.

21414841 is a deficient number, since it is larger than the sum of its proper divisors (3093959).

21414841 is an equidigital number, since it uses as much as digits as its factorization.

21414841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4343.

The product of its digits is 1024, while the sum is 25.

The square root of 21414841 is about 4627.6172054309. The cubic root of 21414841 is about 277.6972749769.

The spelling of 21414841 in words is "twenty-one million, four hundred fourteen thousand, eight hundred forty-one".