Base | Representation |
---|---|
bin | 11001111111100… |
… | …11000000001000 |
3 | 120012022010010222 |
4 | 30333303000020 |
5 | 421310104233 |
6 | 33345325212 |
7 | 5255253641 |
oct | 1477630010 |
9 | 505263128 |
10 | 218050568 |
11 | 1020a168a |
12 | 61036808 |
13 | 36237308 |
14 | 20d606c8 |
15 | 14222898 |
hex | cff3008 |
218050568 has 32 divisors (see below), whose sum is σ = 437383800. Its totient is φ = 101548032.
The previous prime is 218050561. The next prime is 218050589. The reversal of 218050568 is 865050812.
It is a happy number.
It can be written as a sum of positive squares in 4 ways, for example, as 217798564 + 252004 = 14758^2 + 502^2 .
It is not an unprimeable number, because it can be changed into a prime (218050561) 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, 4928 + ... + 21456.
Almost surely, 2218050568 is an apocalyptic number.
It is an amenable number.
218050568 is an abundant number, since it is smaller than the sum of its proper divisors (219333232).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
218050568 is a wasteful number, since it uses less digits than its factorization.
218050568 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 16649 (or 16645 counting only the distinct ones).
The product of its (nonzero) digits is 19200, while the sum is 35.
The square root of 218050568 is about 14766.5354094994. The cubic root of 218050568 is about 601.8926972910.
The spelling of 218050568 in words is "two hundred eighteen million, fifty thousand, five hundred sixty-eight".
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