Search a number
-
+
12642108 = 2231053509
BaseRepresentation
bin110000001110…
…011100111100
3212210021201020
4300032130330
511214021413
61130544140
7212312313
oct60163474
925707636
1012642108
117155226
124298050
13280834b
14197127a
15119ac23
hexc0e73c

12642108 has 12 divisors (see below), whose sum is σ = 29498280. Its totient is φ = 4214032.

The previous prime is 12642083. The next prime is 12642109. The reversal of 12642108 is 80124621.

12642108 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

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 (12642109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 526743 + ... + 526766.

It is an arithmetic number, because the mean of its divisors is an integer number (2458190).

Almost surely, 212642108 is an apocalyptic number.

It is an amenable number.

12642108 is an abundant number, since it is smaller than the sum of its proper divisors (16856172).

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

12642108 is a wasteful number, since it uses less digits than its factorization.

12642108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1053516 (or 1053514 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 12642108 is about 3555.5742152288. The cubic root of 12642108 is about 232.9556056319.

Adding to 12642108 its reverse (80124621), we get a palindrome (92766729).

The spelling of 12642108 in words is "twelve million, six hundred forty-two thousand, one hundred eight".

Divisors: 1 2 3 4 6 12 1053509 2107018 3160527 4214036 6321054 12642108