21801341 has 8 divisors (see below), whose sum is σ = 23049600. Its totient is φ = 20563200.

The previous prime is 21801323. The next prime is 21801347. The reversal of 21801341 is 14310812.

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

It is a cyclic number.

It is not a de Polignac number, because 21801341 - 2¹⁸ = 21539197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21801347) 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, 2141 + ... + 6941.

It is an arithmetic number, because the mean of its divisors is an integer number (2881200).

Almost surely, 2^21801341 is an apocalyptic number.

It is an amenable number.

21801341 is a deficient number, since it is larger than the sum of its proper divisors (1248259).

21801341 is a wasteful number, since it uses less digits than its factorization.

21801341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5059.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 21801341 is about 4669.1906150852. The cubic root of 21801341 is about 279.3579720098.

The spelling of 21801341 in words is "twenty-one million, eight hundred one thousand, three hundred forty-one".