Base | Representation |
---|---|
bin | 11001011010101… |
… | …10001100111111 |
3 | 112212012101122101 |
4 | 30231112030333 |
5 | 414040322030 |
6 | 33053525531 |
7 | 5166201130 |
oct | 1455261477 |
9 | 485171571 |
10 | 213214015 |
11 | aa398933 |
12 | 5b4a38a7 |
13 | 35232a51 |
14 | 20461c87 |
15 | 13ab97ca |
hex | cb5633f |
213214015 has 8 divisors (see below), whose sum is σ = 292407840. Its totient is φ = 146203872.
The previous prime is 213214013. The next prime is 213214019. The reversal of 213214015 is 510412312.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 213214015 - 21 = 213214013 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 213213983 and 213214001.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (213214013) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3045880 + ... + 3045949.
It is an arithmetic number, because the mean of its divisors is an integer number (36550980).
Almost surely, 2213214015 is an apocalyptic number.
213214015 is a deficient number, since it is larger than the sum of its proper divisors (79193825).
213214015 is an equidigital number, since it uses as much as digits as its factorization.
213214015 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 6091841.
The product of its (nonzero) digits is 240, while the sum is 19.
The square root of 213214015 is about 14601.8497115948. The cubic root of 213214015 is about 597.4092134023.
Adding to 213214015 its reverse (510412312), we get a palindrome (723626327).
The spelling of 213214015 in words is "two hundred thirteen million, two hundred fourteen thousand, fifteen".
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