Search a number
-
+
12696143 = 313711069
BaseRepresentation
bin110000011011…
…101001001111
3212220000211112
4300123221033
511222234033
61132042235
7212625665
oct60335117
925800745
1012696143
117191889
12430337b
132826b15
141986c35
1511abc48
hexc1ba4f

12696143 has 8 divisors (see below), whose sum is σ = 13461120. Its totient is φ = 11953440.

The previous prime is 12696139. The next prime is 12696163. The reversal of 12696143 is 34169621.

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

It is a cyclic number.

It is not a de Polignac number, because 12696143 - 22 = 12696139 is a prime.

It is a super-2 number, since 2×126961432 = 322384094152898, 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 (12696133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4388 + ... + 6681.

It is an arithmetic number, because the mean of its divisors is an integer number (1682640).

Almost surely, 212696143 is an apocalyptic number.

12696143 is a deficient number, since it is larger than the sum of its proper divisors (764977).

12696143 is a wasteful number, since it uses less digits than its factorization.

12696143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11137.

The product of its digits is 7776, while the sum is 32.

The square root of 12696143 is about 3563.1647449985. The cubic root of 12696143 is about 233.2870341243.

It can be divided in two parts, 126 and 96143, that added together give a palindrome (96269).

The spelling of 12696143 in words is "twelve million, six hundred ninety-six thousand, one hundred forty-three".

Divisors: 1 31 37 1147 11069 343139 409553 12696143