Search a number
-
+
12790 = 251279
BaseRepresentation
bin11000111110110
3122112201
43013312
5402130
6135114
752201
oct30766
918481
1012790
119678
12749a
135a8b
144938
153bca
hex31f6

12790 has 8 divisors (see below), whose sum is σ = 23040. Its totient is φ = 5112.

The previous prime is 12781. The next prime is 12791. The reversal of 12790 is 9721.

12790 is nontrivially palindromic in base 9.

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

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12791) 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, 630 + ... + 649.

It is an arithmetic number, because the mean of its divisors is an integer number (2880).

212790 is an apocalyptic number.

12790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12790 is a deficient number, since it is larger than the sum of its proper divisors (10250).

12790 is a wasteful number, since it uses less digits than its factorization.

12790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1286.

The product of its (nonzero) digits is 126, while the sum is 19.

The square root of 12790 is about 113.0928821810. The cubic root of 12790 is about 23.3860486150.

The spelling of 12790 in words is "twelve thousand, seven hundred ninety".

Divisors: 1 2 5 10 1279 2558 6395 12790