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12680201 = 19667379
BaseRepresentation
bin110000010111…
…110000001001
3212212012222002
4300113300021
511221231301
61131440345
7212531342
oct60276011
925765862
1012680201
117180906
1242b60b5
13281c7a1
1419810c9
1511a716b
hexc17c09

12680201 has 4 divisors (see below), whose sum is σ = 13347600. Its totient is φ = 12012804.

The previous prime is 12680191. The next prime is 12680207. The reversal of 12680201 is 10208621.

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.

It is a cyclic number.

It is not a de Polignac number, because 12680201 - 26 = 12680137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12680207) 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, 333671 + ... + 333708.

It is an arithmetic number, because the mean of its divisors is an integer number (3336900).

Almost surely, 212680201 is an apocalyptic number.

It is an amenable number.

12680201 is a deficient number, since it is larger than the sum of its proper divisors (667399).

12680201 is an equidigital number, since it uses as much as digits as its factorization.

12680201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667398.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 12680201 is about 3560.9269860529. The cubic root of 12680201 is about 233.1893503998.

Adding to 12680201 its reverse (10208621), we get a palindrome (22888822).

The spelling of 12680201 in words is "twelve million, six hundred eighty thousand, two hundred one".

Divisors: 1 19 667379 12680201