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12008028 = 2231000669
BaseRepresentation
bin101101110011…
…101001011100
3211121001220210
4231303221130
511033224103
61105212420
7204031554
oct55635134
924531823
1012008028
11686189a
124031110
132645856
141848164
1510c2e03
hexb73a5c

12008028 has 12 divisors (see below), whose sum is σ = 28018760. Its totient is φ = 4002672.

The previous prime is 12008027. The next prime is 12008053. The reversal of 12008028 is 82080021.

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

It is a junction number, because it is equal to n+sod(n) for n = 12007995 and 12008013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12008027) 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, 500323 + ... + 500346.

Almost surely, 212008028 is an apocalyptic number.

It is an amenable number.

12008028 is an abundant number, since it is smaller than the sum of its proper divisors (16010732).

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

12008028 is a wasteful number, since it uses less digits than its factorization.

12008028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000676 (or 1000674 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 12008028 is about 3465.2601633932. The cubic root of 12008028 is about 228.9938913850.

Adding to 12008028 its reverse (82080021), we get a palindrome (94088049).

The spelling of 12008028 in words is "twelve million, eight thousand, twenty-eight".

Divisors: 1 2 3 4 6 12 1000669 2001338 3002007 4002676 6004014 12008028