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12681108 = 223211311033
BaseRepresentation
bin110000010111…
…111110010100
3212212021012200
4300113332110
511221243413
61131444500
7212534106
oct60277624
925767180
1012681108
117181560
1242b6730
13282001b
141981576
1511a7573
hexc17f94

12681108 has 72 divisors (see below), whose sum is σ = 36132096. Its totient is φ = 3715200.

The previous prime is 12681103. The next prime is 12681127. The reversal of 12681108 is 80118621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12681103) 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 23 ways as a sum of consecutive naturals, for example, 11760 + ... + 12792.

Almost surely, 212681108 is an apocalyptic number.

12681108 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12681108, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18066048).

12681108 is an abundant number, since it is smaller than the sum of its proper divisors (23450988).

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

12681108 is a wasteful number, since it uses less digits than its factorization.

12681108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1085 (or 1080 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 27.

The square root of 12681108 is about 3561.0543382543. The cubic root of 12681108 is about 233.1949101881.

Adding to 12681108 its reverse (80118621), we get a palindrome (92799729).

The spelling of 12681108 in words is "twelve million, six hundred eighty-one thousand, one hundred eight".

Divisors: 1 2 3 4 6 9 11 12 18 22 31 33 36 44 62 66 93 99 124 132 186 198 279 341 372 396 558 682 1023 1033 1116 1364 2046 2066 3069 3099 4092 4132 6138 6198 9297 11363 12276 12396 18594 22726 32023 34089 37188 45452 64046 68178 96069 102267 128092 136356 192138 204534 288207 352253 384276 409068 576414 704506 1056759 1152828 1409012 2113518 3170277 4227036 6340554 12681108