Base | Representation |
---|---|
bin | 1000001001011110… |
… | …0010010110101011 |
3 | 12122102121200110200 |
4 | 2002113202112223 |
5 | 13434411124412 |
6 | 1001011243243 |
7 | 105125651010 |
oct | 20227422653 |
9 | 5572550420 |
10 | 2187208107 |
11 | a22692907 |
12 | 5105a9523 |
13 | 28b1a30a6 |
14 | 16a6ab707 |
15 | cc0419dc |
hex | 825e25ab |
2187208107 has 24 divisors (see below), whose sum is σ = 3612111360. Its totient is φ = 1249320240.
The previous prime is 2187208091. The next prime is 2187208129. The reversal of 2187208107 is 7018027812.
It is a happy number.
It is not a de Polignac number, because 2187208107 - 24 = 2187208091 is a prime.
It is not an unprimeable number, because it can be changed into a prime (2187208147) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 190932 + ... + 202062.
It is an arithmetic number, because the mean of its divisors is an integer number (150504640).
Almost surely, 22187208107 is an apocalyptic number.
2187208107 is a deficient number, since it is larger than the sum of its proper divisors (1424903253).
2187208107 is a wasteful number, since it uses less digits than its factorization.
2187208107 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 14263 (or 14260 counting only the distinct ones).
The product of its (nonzero) digits is 12544, while the sum is 36.
The square root of 2187208107 is about 46767.5967631436. The cubic root of 2187208107 is about 1298.0657837447.
The spelling of 2187208107 in words is "two billion, one hundred eighty-seven million, two hundred eight thousand, one hundred seven".
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