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12641255 = 511229841
BaseRepresentation
bin110000001110…
…001111100111
3212210020112122
4300032033213
511214010010
61130540155
7212306654
oct60161747
925706478
1012641255
117154620
12429765b
132807b43
141970c2b
15119a855
hexc0e3e7

12641255 has 8 divisors (see below), whose sum is σ = 16548624. Its totient is φ = 9193600.

The previous prime is 12641249. The next prime is 12641257. The reversal of 12641255 is 55214621.

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

It is not a de Polignac number, because 12641255 - 222 = 8446951 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12641257) 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, 114866 + ... + 114975.

It is an arithmetic number, because the mean of its divisors is an integer number (2068578).

Almost surely, 212641255 is an apocalyptic number.

12641255 is a deficient number, since it is larger than the sum of its proper divisors (3907369).

12641255 is a wasteful number, since it uses less digits than its factorization.

12641255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229857.

The product of its digits is 2400, while the sum is 26.

The square root of 12641255 is about 3555.4542607099. The cubic root of 12641255 is about 232.9503661154.

Adding to 12641255 its reverse (55214621), we get a palindrome (67855876).

The spelling of 12641255 in words is "twelve million, six hundred forty-one thousand, two hundred fifty-five".

Divisors: 1 5 11 55 229841 1149205 2528251 12641255