Search a number
-
+
12580117 = 111143647
BaseRepresentation
bin101111111111…
…010100010101
3212200010200021
4233333110111
511210030432
61125345141
7211633504
oct57772425
925603607
1012580117
1171126a0
1242681b1
1327b6074
14195683b
151187697
hexbff515

12580117 has 4 divisors (see below), whose sum is σ = 13723776. Its totient is φ = 11436460.

The previous prime is 12580093. The next prime is 12580159. The reversal of 12580117 is 71108521.

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, and also an emirpimes, since its reverse is a distinct semiprime: 71108521 = 116464411.

It is a cyclic number.

It is not a de Polignac number, because 12580117 - 215 = 12547349 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12580091 and 12580100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12580817) 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, 571813 + ... + 571834.

It is an arithmetic number, because the mean of its divisors is an integer number (3430944).

Almost surely, 212580117 is an apocalyptic number.

It is an amenable number.

12580117 is a deficient number, since it is larger than the sum of its proper divisors (1143659).

12580117 is a wasteful number, since it uses less digits than its factorization.

12580117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1143658.

The product of its (nonzero) digits is 560, while the sum is 25.

The square root of 12580117 is about 3546.8460637586. The cubic root of 12580117 is about 232.5742130223.

Adding to 12580117 its reverse (71108521), we get a palindrome (83688638).

The spelling of 12580117 in words is "twelve million, five hundred eighty thousand, one hundred seventeen".

Divisors: 1 11 1143647 12580117