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12008907 = 329471409
BaseRepresentation
bin101101110011…
…110111001011
3211121010010100
4231303313023
511033241112
61105220443
7204034251
oct55636713
924533110
1012008907
116862519
124031723
132646081
1418485d1
1510c32dc
hexb73dcb

12008907 has 12 divisors (see below), whose sum is σ = 17376840. Its totient is φ = 7991808.

The previous prime is 12008903. The next prime is 12008917. The reversal of 12008907 is 70980021.

It is not a de Polignac number, because 12008907 - 22 = 12008903 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12008903) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7819 + ... + 9227.

It is an arithmetic number, because the mean of its divisors is an integer number (1448070).

Almost surely, 212008907 is an apocalyptic number.

12008907 is a deficient number, since it is larger than the sum of its proper divisors (5367933).

12008907 is a wasteful number, since it uses less digits than its factorization.

12008907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2362 (or 2359 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 12008907 is about 3465.3869913763. The cubic root of 12008907 is about 228.9994787781. Note that the first 3 decimals are identical.

Adding to 12008907 its reverse (70980021), we get a palindrome (82988928).

The spelling of 12008907 in words is "twelve million, eight thousand, nine hundred seven".

Divisors: 1 3 9 947 1409 2841 4227 8523 12681 1334323 4002969 12008907