Base | Representation |
---|---|
bin | 11001101010000… |
… | …11101010011110 |
3 | 120000000002020012 |
4 | 30311003222132 |
5 | 420100011410 |
6 | 33205123222 |
7 | 5222316650 |
oct | 1465035236 |
9 | 500002205 |
10 | 215235230 |
11 | 100549461 |
12 | 600b9512 |
13 | 3578ca32 |
14 | 2082a6d0 |
15 | 13d68605 |
hex | cd43a9e |
215235230 has 32 divisors (see below), whose sum is σ = 466076160. Its totient is φ = 69910560.
The previous prime is 215235221. The next prime is 215235269. The reversal of 215235230 is 32532512.
It is a junction number, because it is equal to n+sod(n) for n = 215235196 and 215235205.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79586 + ... + 82245.
It is an arithmetic number, because the mean of its divisors is an integer number (14564880).
Almost surely, 2215235230 is an apocalyptic number.
215235230 is an abundant number, since it is smaller than the sum of its proper divisors (250840930).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
215235230 is a wasteful number, since it uses less digits than its factorization.
215235230 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 161864.
The product of its (nonzero) digits is 1800, while the sum is 23.
The square root of 215235230 is about 14670.8973822326. The cubic root of 215235230 is about 599.2910422578.
Adding to 215235230 its reverse (32532512), we get a palindrome (247767742).
The spelling of 215235230 in words is "two hundred fifteen million, two hundred thirty-five thousand, two hundred thirty".
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