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12012307 = 471311951
BaseRepresentation
bin101101110100…
…101100010011
3211121021210021
4231310230103
511033343212
61105244311
7204050206
oct55645423
924537707
1012012307
11686502a
124033697
132647798
14184993d
1510c4307
hexb74b13

12012307 has 8 divisors (see below), whose sum is σ = 12367872. Its totient is φ = 11661000.

The previous prime is 12012289. The next prime is 12012331. The reversal of 12012307 is 70321021.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12012307 - 211 = 12010259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12012337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5182 + ... + 7132.

It is an arithmetic number, because the mean of its divisors is an integer number (1545984).

Almost surely, 212012307 is an apocalyptic number.

12012307 is a deficient number, since it is larger than the sum of its proper divisors (355565).

12012307 is a wasteful number, since it uses less digits than its factorization.

12012307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2129.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 12012307 is about 3465.8775223600. The cubic root of 12012307 is about 229.0210884261.

Adding to 12012307 its reverse (70321021), we get a palindrome (82333328).

The spelling of 12012307 in words is "twelve million, twelve thousand, three hundred seven".

Divisors: 1 47 131 1951 6157 91697 255581 12012307