Base | Representation |
---|---|
bin | 11001010111110… |
… | …00101111111000 |
3 | 112211110221112221 |
4 | 30223320233320 |
5 | 413441044344 |
6 | 33041413424 |
7 | 5163015124 |
oct | 1453705770 |
9 | 484427487 |
10 | 212831224 |
11 | aa157281 |
12 | 5b33a274 |
13 | 3512a748 |
14 | 203a2584 |
15 | 13a41184 |
hex | caf8bf8 |
212831224 has 16 divisors (see below), whose sum is σ = 399850200. Its totient is φ = 106204512.
The previous prime is 212831221. The next prime is 212831243. The reversal of 212831224 is 422138212.
212831224 = T67 + T68 + ... + T1084.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (212831221) 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 3 ways as a sum of consecutive naturals, for example, 22062 + ... + 30205.
Almost surely, 2212831224 is an apocalyptic number.
It is an amenable number.
212831224 is a deficient number, since it is larger than the sum of its proper divisors (187018976).
212831224 is a wasteful number, since it uses less digits than its factorization.
212831224 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 52782 (or 52778 counting only the distinct ones).
The product of its digits is 1536, while the sum is 25.
The square root of 212831224 is about 14588.7362029752. The cubic root of 212831224 is about 597.0514822886.
Adding to 212831224 its reverse (422138212), we get a palindrome (634969436).
The spelling of 212831224 in words is "two hundred twelve million, eight hundred thirty-one thousand, two hundred twenty-four".
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