Search a number
-
+
12731050 = 2521012521
BaseRepresentation
bin110000100100…
…001010101010
3212221210201101
4300210022222
511224343200
61132512014
7213132523
oct60441252
925853641
1012731050
117206032
12431b60a
132839987
14199584a
1511b726a
hexc242aa

12731050 has 24 divisors (see below), whose sum is σ = 23923692. Its totient is φ = 5040000.

The previous prime is 12731039. The next prime is 12731051. The reversal of 12731050 is 5013721.

It can be written as a sum of positive squares in 6 ways, for example, as 3568321 + 9162729 = 1889^2 + 3027^2 .

It is a hoax number, since the sum of its digits (19) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (12731051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3790 + ... + 6310.

Almost surely, 212731050 is an apocalyptic number.

12731050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12731050 is a deficient number, since it is larger than the sum of its proper divisors (11192642).

12731050 is a wasteful number, since it uses less digits than its factorization.

12731050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2634 (or 2629 counting only the distinct ones).

The product of its (nonzero) digits is 210, while the sum is 19.

The square root of 12731050 is about 3568.0596968100. The cubic root of 12731050 is about 233.5006396454.

Adding to 12731050 its reverse (5013721), we get a palindrome (17744771).

The spelling of 12731050 in words is "twelve million, seven hundred thirty-one thousand, fifty".

Divisors: 1 2 5 10 25 50 101 202 505 1010 2521 2525 5042 5050 12605 25210 63025 126050 254621 509242 1273105 2546210 6365525 12731050