Base | Representation |
---|---|
bin | 11100011000100… |
… | …10101001101001 |
3 | 121121000220010000 |
4 | 32030102221221 |
5 | 441423300040 |
6 | 35343213213 |
7 | 5620562160 |
oct | 1614225151 |
9 | 547026100 |
10 | 238103145 |
11 | 112448465 |
12 | 678a7209 |
13 | 3a438647 |
14 | 238a03d7 |
15 | 15d84130 |
hex | e312a69 |
238103145 has 40 divisors (see below), whose sum is σ = 487802304. Its totient is φ = 108845856.
The previous prime is 238103053. The next prime is 238103167. The reversal of 238103145 is 541301832.
It is a happy number.
It is not a de Polignac number, because 238103145 - 27 = 238103017 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (27).
It is an unprimeable number.
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 39 ways as a sum of consecutive naturals, for example, 39159 + ... + 44828.
Almost surely, 2238103145 is an apocalyptic number.
It is an amenable number.
238103145 is an abundant number, since it is smaller than the sum of its proper divisors (249699159).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
238103145 is an equidigital number, since it uses as much as digits as its factorization.
238103145 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 84011 (or 84002 counting only the distinct ones).
The product of its (nonzero) digits is 2880, while the sum is 27.
The square root of 238103145 is about 15430.5912070795. The cubic root of 238103145 is about 619.8049551235.
Adding to 238103145 its reverse (541301832), we get a palindrome (779404977).
The spelling of 238103145 in words is "two hundred thirty-eight million, one hundred three thousand, one hundred forty-five".
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