Base | Representation |
---|---|
bin | 11011011010111… |
… | …00001001110101 |
3 | 121000211000002111 |
4 | 31231130021311 |
5 | 432340444410 |
6 | 34454011021 |
7 | 5462046301 |
oct | 1555341165 |
9 | 530730074 |
10 | 230015605 |
11 | 108924146 |
12 | 65046a71 |
13 | 38866411 |
14 | 22796d01 |
15 | 152d7b8a |
hex | db5c275 |
230015605 has 16 divisors (see below), whose sum is σ = 280033200. Its totient is φ = 181350400.
The previous prime is 230015587. The next prime is 230015609. The reversal of 230015605 is 506510032.
It is a happy number.
It can be written as a sum of positive squares in 8 ways, for example, as 16826404 + 213189201 = 4102^2 + 14601^2 .
It is not a de Polignac number, because 230015605 - 27 = 230015477 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (230015609) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177801 + ... + 179089.
It is an arithmetic number, because the mean of its divisors is an integer number (17502075).
Almost surely, 2230015605 is an apocalyptic number.
It is an amenable number.
230015605 is a deficient number, since it is larger than the sum of its proper divisors (50017595).
230015605 is a wasteful number, since it uses less digits than its factorization.
230015605 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1784.
The product of its (nonzero) digits is 900, while the sum is 22.
The square root of 230015605 is about 15166.2653609911. The cubic root of 230015605 is about 612.7064238291.
Adding to 230015605 its reverse (506510032), we get a palindrome (736525637).
The spelling of 230015605 in words is "two hundred thirty million, fifteen thousand, six hundred five".
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