Search a number

8241 has 8 divisors (see below), whose sum is σ = 11424. Its totient is φ = 5280.

The previous prime is 8237. The next prime is 8243. The reversal of 8241 is 1428.

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

It is not a de Polignac number, because 8241 - 22 = 8237 is a prime.

It is a plaindrome in base 9 and base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 8241.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8243) 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, 90 + ... + 156.

It is an arithmetic number, because the mean of its divisors is an integer number (1428).

28241 is an apocalyptic number.

It is an amenable number.

8241 is a deficient number, since it is larger than the sum of its proper divisors (3183).

8241 is a wasteful number, since it uses less digits than its factorization.

8241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111.

The product of its digits is 64, while the sum is 15.

The square root of 8241 is about 90.7799537343. The cubic root of 8241 is about 20.1988497205.

Adding to 8241 its sum of digits (15), we get a triangular number (8256 = T128).

Adding to 8241 its reverse (1428), we get a palindrome (9669).

The spelling of 8241 in words is "eight thousand, two hundred forty-one".

Divisors: 1 3 41 67 123 201 2747 8241