Base | Representation |
---|---|
bin | 11011011111101… |
… | …01100100101111 |
3 | 121001222221002221 |
4 | 31233311210233 |
5 | 433021102030 |
6 | 34515300211 |
7 | 5500304350 |
oct | 1557654457 |
9 | 531887087 |
10 | 230644015 |
11 | 109213298 |
12 | 652aa667 |
13 | 38a26464 |
14 | 228bbd27 |
15 | 153ade7a |
hex | dbf592f |
230644015 has 32 divisors (see below), whose sum is σ = 336061440. Its totient is φ = 148345344.
The previous prime is 230644013. The next prime is 230644027. The reversal of 230644015 is 510446032.
It is not a de Polignac number, because 230644015 - 21 = 230644013 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (230644013) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 260764 + ... + 261646.
It is an arithmetic number, because the mean of its divisors is an integer number (10501920).
Almost surely, 2230644015 is an apocalyptic number.
230644015 is a deficient number, since it is larger than the sum of its proper divisors (105417425).
230644015 is a wasteful number, since it uses less digits than its factorization.
230644015 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1351.
The product of its (nonzero) digits is 2880, while the sum is 25.
The square root of 230644015 is about 15186.9685915261. The cubic root of 230644015 is about 613.2638943192.
The spelling of 230644015 in words is "two hundred thirty million, six hundred forty-four thousand, fifteen".
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