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12168133 = 79154027
BaseRepresentation
bin101110011010…
…101111000101
3211220012112121
4232122233011
511103340013
61112445541
7205266415
oct56325705
924805477
1012168133
11696110a
1240a98b1
1326a06a3
14188a645
15110558d
hexb9abc5

12168133 has 4 divisors (see below), whose sum is σ = 12322240. Its totient is φ = 12014028.

The previous prime is 12168077. The next prime is 12168137. The reversal of 12168133 is 33186121.

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: 33186121 = 291144349.

It is a cyclic number.

It is not a de Polignac number, because 12168133 - 213 = 12159941 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12168098 and 12168107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12168137) 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, 76935 + ... + 77092.

It is an arithmetic number, because the mean of its divisors is an integer number (3080560).

Almost surely, 212168133 is an apocalyptic number.

It is an amenable number.

12168133 is a deficient number, since it is larger than the sum of its proper divisors (154107).

12168133 is an equidigital number, since it uses as much as digits as its factorization.

12168133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154106.

The product of its digits is 864, while the sum is 25.

The square root of 12168133 is about 3488.2851087605. The cubic root of 12168133 is about 230.0071390349.

The spelling of 12168133 in words is "twelve million, one hundred sixty-eight thousand, one hundred thirty-three".

Divisors: 1 79 154027 12168133