Base | Representation |
---|---|
bin | 11001011001100… |
… | …01111011111100 |
3 | 112211220211212122 |
4 | 30230301323330 |
5 | 414021043333 |
6 | 33050422112 |
7 | 5165012060 |
oct | 1454617374 |
9 | 484824778 |
10 | 213065468 |
11 | aa2a7270 |
12 | 5b431938 |
13 | 351b0255 |
14 | 20423aa0 |
15 | 13a8a798 |
hex | cb31efc |
213065468 has 96 divisors (see below), whose sum is σ = 510935040. Its totient is φ = 75176640.
The previous prime is 213065467. The next prime is 213065483. The reversal of 213065468 is 864560312.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (213065467) 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 31 ways as a sum of consecutive naturals, for example, 133805 + ... + 135387.
It is an arithmetic number, because the mean of its divisors is an integer number (5322240).
Almost surely, 2213065468 is an apocalyptic number.
213065468 is a gapful number since it is divisible by the number (28) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 213065468, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (255467520).
213065468 is an abundant number, since it is smaller than the sum of its proper divisors (297869572).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
213065468 is a wasteful number, since it uses less digits than its factorization.
213065468 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1647 (or 1645 counting only the distinct ones).
The product of its (nonzero) digits is 34560, while the sum is 35.
The square root of 213065468 is about 14596.7622437306. The cubic root of 213065468 is about 597.2704420936.
The spelling of 213065468 in words is "two hundred thirteen million, sixty-five thousand, four hundred sixty-eight".
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