21847341 has 8 divisors (see below), whose sum is σ = 29171584. Its totient is φ = 14544000.

The previous prime is 21847303. The next prime is 21847349. The reversal of 21847341 is 14374812.

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

It is not a de Polignac number, because 21847341 - 2⁶ = 21847277 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21847299 and 21847308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21847349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2596 + ... + 7101.

It is an arithmetic number, because the mean of its divisors is an integer number (3646448).

Almost surely, 2^21847341 is an apocalyptic number.

It is an amenable number.

21847341 is a deficient number, since it is larger than the sum of its proper divisors (7324243).

21847341 is an equidigital number, since it uses as much as digits as its factorization.

21847341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10451.

The product of its digits is 5376, while the sum is 30.

The square root of 21847341 is about 4674.1139267245. The cubic root of 21847341 is about 279.5543122149.

The spelling of 21847341 in words is "twenty-one million, eight hundred forty-seven thousand, three hundred forty-one".