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12680136 = 23327139181
BaseRepresentation
bin110000010111…
…101111001000
3212212012212200
4300113233020
511221231021
61131440200
7212531220
oct60275710
925765780
1012680136
117180857
1242b6060
13281c751
141981080
1511a7126
hexc17bc8

12680136 has 96 divisors (see below), whose sum is σ = 39748800. Its totient is φ = 3576960.

The previous prime is 12680117. The next prime is 12680137. The reversal of 12680136 is 63108621.

12680136 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (12680137) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69966 + ... + 70146.

It is an arithmetic number, because the mean of its divisors is an integer number (414050).

Almost surely, 212680136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12680136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19874400).

12680136 is an abundant number, since it is smaller than the sum of its proper divisors (27068664).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12680136 is a wasteful number, since it uses less digits than its factorization.

12680136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339 (or 332 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 12680136 is about 3560.9178592043. The cubic root of 12680136 is about 233.1889519483.

Adding to 12680136 its reverse (63108621), we get a palindrome (75788757).

The spelling of 12680136 in words is "twelve million, six hundred eighty thousand, one hundred thirty-six".

Divisors: 1 2 3 4 6 7 8 9 12 14 18 21 24 28 36 42 56 63 72 84 126 139 168 181 252 278 362 417 504 543 556 724 834 973 1086 1112 1251 1267 1448 1629 1668 1946 2172 2502 2534 2919 3258 3336 3801 3892 4344 5004 5068 5838 6516 7602 7784 8757 10008 10136 11403 11676 13032 15204 17514 22806 23352 25159 30408 35028 45612 50318 70056 75477 91224 100636 150954 176113 201272 226431 301908 352226 452862 528339 603816 704452 905724 1056678 1408904 1585017 1811448 2113356 3170034 4226712 6340068 12680136