Base | Representation |
---|---|
bin | 1000010000001001… |
… | …0110001110100010 |
3 | 12201101022012212220 |
4 | 2010002112032202 |
5 | 14014043122332 |
6 | 1003451331510 |
7 | 105615645621 |
oct | 20402261642 |
9 | 5641265786 |
10 | 2215207842 |
11 | a37477491 |
12 | 519a50b96 |
13 | 293c27793 |
14 | 1702b96b8 |
15 | ce722d2c |
hex | 840963a2 |
2215207842 has 16 divisors (see below), whose sum is σ = 4432656000. Its totient is φ = 738029232.
The previous prime is 2215207793. The next prime is 2215207847. The reversal of 2215207842 is 2487025122.
It is not an unprimeable number, because it can be changed into a prime (2215207847) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80353 + ... + 104340.
It is an arithmetic number, because the mean of its divisors is an integer number (277041000).
Almost surely, 22215207842 is an apocalyptic number.
2215207842 is an abundant number, since it is smaller than the sum of its proper divisors (2217448158).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
2215207842 is a wasteful number, since it uses less digits than its factorization.
2215207842 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 186697.
The product of its (nonzero) digits is 17920, while the sum is 33.
The square root of 2215207842 is about 47065.9945395824. The cubic root of 2215207842 is about 1303.5814147122.
The spelling of 2215207842 in words is "two billion, two hundred fifteen million, two hundred seven thousand, eight hundred forty-two".
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