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12645108 = 22327192139
BaseRepresentation
bin110000001111…
…001011110100
3212210102211100
4300033023310
511214120413
61131010100
7212324130
oct60171364
925712740
1012645108
117157503
124299930
132809818
1419723c0
15119ba73
hexc0f2f4

12645108 has 108 divisors (see below), whose sum is σ = 38831520. Its totient is φ = 3398112.

The previous prime is 12645107. The next prime is 12645163. The reversal of 12645108 is 80154621.

12645108 is a `hidden beast` number, since 1 + 2 + 645 + 10 + 8 = 666.

12645108 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12645103) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 90903 + ... + 91041.

Almost surely, 212645108 is an apocalyptic number.

12645108 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 12645108, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19415760).

12645108 is an abundant number, since it is smaller than the sum of its proper divisors (26186412).

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

12645108 is a wasteful number, since it uses less digits than its factorization.

12645108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194 (or 170 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 12645108 is about 3555.9960629899. The cubic root of 12645108 is about 232.9740311335.

Adding to 12645108 its reverse (80154621), we get a palindrome (92799729).

The spelling of 12645108 in words is "twelve million, six hundred forty-five thousand, one hundred eight".

Divisors: 1 2 3 4 6 7 9 12 14 18 19 21 28 36 38 42 57 63 76 84 114 126 133 139 171 228 252 266 278 342 361 399 417 532 556 684 722 798 834 973 1083 1197 1251 1444 1596 1668 1946 2166 2394 2502 2527 2641 2919 3249 3892 4332 4788 5004 5054 5282 5838 6498 7581 7923 8757 10108 10564 11676 12996 15162 15846 17514 18487 22743 23769 30324 31692 35028 36974 45486 47538 50179 55461 73948 90972 95076 100358 110922 150537 166383 200716 221844 301074 332766 351253 451611 602148 665532 702506 903222 1053759 1405012 1806444 2107518 3161277 4215036 6322554 12645108