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12008 = 231979
BaseRepresentation
bin10111011101000
3121110202
42323220
5341013
6131332
750003
oct27350
917422
1012008
119027
126b48
135609
14453a
153858
hex2ee8

12008 has 16 divisors (see below), whose sum is σ = 24000. Its totient is φ = 5616.

The previous prime is 12007. The next prime is 12011. The reversal of 12008 is 80021.

Adding to 12008 its reverse (80021), we get a palindrome (92029).

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 12008.

It is not an unprimeable number, because it can be changed into a prime (12007) 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, 113 + ... + 191.

It is an arithmetic number, because the mean of its divisors is an integer number (1500).

212008 is an apocalyptic number.

It is an amenable number.

12008 is a deficient number, since it is larger than the sum of its proper divisors (11992).

12008 is a wasteful number, since it uses less digits than its factorization.

12008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104 (or 100 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 12008 is about 109.5810202544. The cubic root of 12008 is about 22.8993713398.

The spelling of 12008 in words is "twelve thousand, eight".

Divisors: 1 2 4 8 19 38 76 79 152 158 316 632 1501 3002 6004 12008