Base | Representation |
---|---|
bin | 11011011011111… |
… | …10001110001001 |
3 | 121001002002111122 |
4 | 31231332032021 |
5 | 432404431040 |
6 | 34501005025 |
7 | 5463200153 |
oct | 1555761611 |
9 | 531062448 |
10 | 230155145 |
11 | 108a09a70 |
12 | 650b3775 |
13 | 388b4a9c |
14 | 227d1ad3 |
15 | 153141b5 |
hex | db7e389 |
230155145 has 16 divisors (see below), whose sum is σ = 302401728. Its totient is φ = 166770240.
The previous prime is 230155103. The next prime is 230155169. The reversal of 230155145 is 541551032.
It is not a de Polignac number, because 230155145 - 28 = 230154889 is a prime.
It is a Duffinian number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7682 + ... + 22788.
It is an arithmetic number, because the mean of its divisors is an integer number (18900108).
Almost surely, 2230155145 is an apocalyptic number.
It is an amenable number.
230155145 is a deficient number, since it is larger than the sum of its proper divisors (72246583).
230155145 is a wasteful number, since it uses less digits than its factorization.
230155145 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 15400.
The product of its (nonzero) digits is 3000, while the sum is 26.
The square root of 230155145 is about 15170.8650050022. The cubic root of 230155145 is about 612.8302991507.
The spelling of 230155145 in words is "two hundred thirty million, one hundred fifty-five thousand, one hundred forty-five".
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