Search a number
-
+
13081267 = 611311637
BaseRepresentation
bin110001111001…
…101010110011
3220121121010101
4301321222303
511322100032
61144213231
7216121543
oct61715263
926547111
1013081267
117425171
12446a217
1329301c4
141a47323
151235de7
hexc79ab3

13081267 has 8 divisors (see below), whose sum is σ = 13405392. Its totient is φ = 12760800.

The previous prime is 13081259. The next prime is 13081283. The reversal of 13081267 is 76218031.

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 13081267 - 23 = 13081259 is a prime.

It is a super-2 number, since 2×130812672 = 342239092650578, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13081207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7173 + ... + 8809.

It is an arithmetic number, because the mean of its divisors is an integer number (1675674).

Almost surely, 213081267 is an apocalyptic number.

13081267 is a deficient number, since it is larger than the sum of its proper divisors (324125).

13081267 is a wasteful number, since it uses less digits than its factorization.

13081267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1829.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 13081267 is about 3616.8034229137. The cubic root of 13081267 is about 235.6224152188.

Adding to 13081267 its reverse (76218031), we get a palindrome (89299298).

The spelling of 13081267 in words is "thirteen million, eighty-one thousand, two hundred sixty-seven".

Divisors: 1 61 131 1637 7991 99857 214447 13081267