21384341 has 8 divisors (see below), whose sum is σ = 23448000. Its totient is φ = 19340640.

The previous prime is 21384313. The next prime is 21384347. The reversal of 21384341 is 14348312.

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

It is not a de Polignac number, because 21384341 - 2¹⁰ = 21383317 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21384341.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21384347) 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, 2696 + ... + 7073.

It is an arithmetic number, because the mean of its divisors is an integer number (2931000).

Almost surely, 2^21384341 is an apocalyptic number.

It is an amenable number.

21384341 is a deficient number, since it is larger than the sum of its proper divisors (2063659).

21384341 is a wasteful number, since it uses less digits than its factorization.

21384341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9979.

The product of its digits is 2304, while the sum is 26.

The square root of 21384341 is about 4624.3205987475. The cubic root of 21384341 is about 277.5653759342.

The spelling of 21384341 in words is "twenty-one million, three hundred eighty-four thousand, three hundred forty-one".