Search a number
-
+
12293 = 19647

12293 has 4 divisors (see below), whose sum is σ = 12960. Its totient is φ = 11628.

The previous prime is 12289. The next prime is 12301. The reversal of 12293 is 39221.

Multipling 12293 by its sum of digits (17), we get a triangular number (208981 = T646).

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 12293 - 22 = 12289 is a prime.

It is a super-2 number, since 2×122932 = 302235698, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 305 + ... + 342.

It is an arithmetic number, because the mean of its divisors is an integer number (3240).

212293 is an apocalyptic number.

It is an amenable number.

12293 is a deficient number, since it is larger than the sum of its proper divisors (667).

12293 is an equidigital number, since it uses as much as digits as its factorization.

12293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666.

The product of its digits is 108, while the sum is 17.

The square root of 12293 is about 110.8738021356. The cubic root of 12293 is about 23.0791225824.

The spelling of 12293 in words is "twelve thousand, two hundred ninety-three".

Divisors: 1 19 647 12293