Base | Representation |
---|---|
bin | 1000010000001100… |
… | …0010001110110101 |
3 | 12201101122101010120 |
4 | 2010003002032311 |
5 | 14014114404320 |
6 | 1003455242153 |
7 | 105620326251 |
oct | 20403021665 |
9 | 5641571116 |
10 | 2215388085 |
11 | a3758a949 |
12 | 519b19359 |
13 | 293c8b831 |
14 | 170325261 |
15 | ce75b440 |
hex | 840c23b5 |
2215388085 has 8 divisors (see below), whose sum is σ = 3544620960. Its totient is φ = 1181540304.
The previous prime is 2215388051. The next prime is 2215388177. The reversal of 2215388085 is 5808835122.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 2215388085 - 214 = 2215371701 is a prime.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73846255 + ... + 73846284.
It is an arithmetic number, because the mean of its divisors is an integer number (443077620).
Almost surely, 22215388085 is an apocalyptic number.
It is an amenable number.
2215388085 is a deficient number, since it is larger than the sum of its proper divisors (1329232875).
2215388085 is a wasteful number, since it uses less digits than its factorization.
2215388085 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 147692547.
The product of its (nonzero) digits is 153600, while the sum is 42.
The square root of 2215388085 is about 47067.9092907259. The cubic root of 2215388085 is about 1303.6167695666.
The spelling of 2215388085 in words is "two billion, two hundred fifteen million, three hundred eighty-eight thousand, eighty-five".
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