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BaseRepresentation
bin10111011100010
3121110112
42323202
5341002
6131322
746664
oct27342
917415
1012002
119021
126b42
135603
144534
153852
hex2ee2

12002 has 8 divisors (see below), whose sum is σ = 19116. Its totient is φ = 5632.

The previous prime is 11987. The next prime is 12007. The reversal of 12002 is 20021.

12002 is nontrivially palindromic in base 7 and base 16.

It can be written as a sum of positive squares in 2 ways, for example, as 11881 + 121 = 109^2 + 11^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (12007) by changing a digit.

12002 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143 + ... + 210.

212002 is an apocalyptic number.

12002 is a deficient number, since it is larger than the sum of its proper divisors (7114).

12002 is a wasteful number, since it uses less digits than its factorization.

12002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372.

The product of its (nonzero) digits is 4, while the sum is 5.

The square root of 12002 is about 109.5536398300. The cubic root of 12002 is about 22.8955566851.

Adding to 12002 its reverse (20021), we get a palindrome (32023).

Multiplying 12002 by its reverse (20021), we get a palindrome (240292042).

The spelling of 12002 in words is "twelve thousand, two", and thus it is an iban number.

Divisors: 1 2 17 34 353 706 6001 12002