Search a number
-
+
12701205 = 345112851
BaseRepresentation
bin110000011100…
…111000010101
3212220021210000
4300130320111
511222414310
61132121513
7212646516
oct60347025
925807700
1012701205
117195670
124306299
13282920a
141988a0d
1511ad4c0
hexc1ce15

12701205 has 40 divisors (see below), whose sum is σ = 24846624. Its totient is φ = 6156000.

The previous prime is 12701203. The next prime is 12701209. The reversal of 12701205 is 50210721.

It is not a de Polignac number, because 12701205 - 21 = 12701203 is a prime.

It is a super-2 number, since 2×127012052 = 322641216904050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12701203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3030 + ... + 5880.

Almost surely, 212701205 is an apocalyptic number.

12701205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12701205 is a deficient number, since it is larger than the sum of its proper divisors (12145419).

12701205 is a wasteful number, since it uses less digits than its factorization.

12701205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2879 (or 2870 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 18.

The square root of 12701205 is about 3563.8749978079. The cubic root of 12701205 is about 233.3180341443.

Adding to 12701205 its reverse (50210721), we get a palindrome (62911926).

The spelling of 12701205 in words is "twelve million, seven hundred one thousand, two hundred five".

Divisors: 1 3 5 9 11 15 27 33 45 55 81 99 135 165 297 405 495 891 1485 2851 4455 8553 14255 25659 31361 42765 76977 94083 128295 156805 230931 282249 384885 470415 846747 1154655 1411245 2540241 4233735 12701205