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12208271 = 67257709
BaseRepresentation
bin101110100100…
…100010001111
3211222020121012
4232210202033
511111131041
61113355435
7205524425
oct56444217
924866535
1012208271
116989289
124108b7b
1326b5a3a
14189b115
1511123eb
hexba488f

12208271 has 8 divisors (see below), whose sum is σ = 12456240. Its totient is φ = 11962368.

The previous prime is 12208253. The next prime is 12208277. The reversal of 12208271 is 17280221.

12208271 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12208271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12208277) 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, 16865 + ... + 17573.

It is an arithmetic number, because the mean of its divisors is an integer number (1557030).

Almost surely, 212208271 is an apocalyptic number.

12208271 is a deficient number, since it is larger than the sum of its proper divisors (247969).

12208271 is an equidigital number, since it uses as much as digits as its factorization.

12208271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1033.

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 12208271 is about 3494.0336289166. The cubic root of 12208271 is about 230.2597632224.

Adding to 12208271 its reverse (17280221), we get a palindrome (29488492).

The spelling of 12208271 in words is "twelve million, two hundred eight thousand, two hundred seventy-one".

Divisors: 1 67 257 709 17219 47503 182213 12208271