| Base | Representation |
|---|---|
| bin | 1100100111110010011… |
| … | …0101001100110000000 |
| 3 | 202201200212120222120000 |
| 4 | 3021330212221212000 |
| 5 | 12023041222341144 |
| 6 | 243340413320000 |
| 7 | 21444316665420 |
| oct | 3117446514600 |
| 9 | 681625528500 |
| 10 | 216838871424 |
| 11 | 83a6298756a |
| 12 | 36036a96000 |
| 13 | 175a8b18216 |
| 14 | a6d061a480 |
| 15 | 599191e769 |
| hex | 327c9a9980 |
216838871424 has 480 divisors, whose sum is σ = 762298693200. Its totient is φ = 59936163840.
The previous prime is 216838871399. The next prime is 216838871449. The reversal of 216838871424 is 424178838612.
216838871424 is a `hidden beast` number, since 216 + 8 + 388 + 7 + 1 + 42 + 4 = 666.
It is an interprime number because it is at equal distance from previous prime (216838871399) and next prime (216838871449).
It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.
It is a Harshad number since it is a multiple of its sum of digits (54).
It is a nude number because it is divisible by every one of its digits.
It is a congruent number.
It is an unprimeable number.
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 59 ways as a sum of consecutive naturals, for example, 69743982 + ... + 69747090.
Almost surely, 2216838871424 is an apocalyptic number.
216838871424 is a gapful number since it is divisible by the number (24) 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 216838871424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (381149346600).
216838871424 is an abundant number, since it is smaller than the sum of its proper divisors (545459821776).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
216838871424 is an equidigital number, since it uses as much as digits as its factorization.
216838871424 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3204 (or 3152 counting only the distinct ones).
The product of its digits is 4128768, while the sum is 54.
The spelling of 216838871424 in words is "two hundred sixteen billion, eight hundred thirty-eight million, eight hundred seventy-one thousand, four hundred twenty-four".
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