| Base | Representation |
|---|---|
| bin | 11001110010100… |
| … | …10011001001110 |
| 3 | 120002002102101000 |
| 4 | 30321102121032 |
| 5 | 420341003032 |
| 6 | 33245001130 |
| 7 | 5234615640 |
| oct | 1471223116 |
| 9 | 502072330 |
| 10 | 216344142 |
| 11 | 101136613 |
| 12 | 605531a6 |
| 13 | 35a8a6b1 |
| 14 | 20a38890 |
| 15 | 13ed6e7c |
| hex | ce5264e |
216344142 has 128 divisors (see below), whose sum is σ = 588487680. Its totient is φ = 57507840.
The previous prime is 216344131. The next prime is 216344153. The reversal of 216344142 is 241443612.
It is a happy number.
216344142 is a `hidden beast` number, since 21 + 634 + 4 + 1 + 4 + 2 = 666.
216344142 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is an interprime number because it is at equal distance from previous prime (216344131) and next prime (216344153).
It is a super-3 number, since 3×2163441423 (a number of 26 digits) contains 333 as substring.
It is a Harshad number since it is a multiple of its sum of digits (27).
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 841678 + ... + 841934.
It is an arithmetic number, because the mean of its divisors is an integer number (4597560).
Almost surely, 2216344142 is an apocalyptic number.
It is a practical number, because each smaller number is the sum of distinct divisors of 216344142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (294243840).
216344142 is an abundant number, since it is smaller than the sum of its proper divisors (372143538).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
216344142 is a wasteful number, since it uses less digits than its factorization.
216344142 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 423 (or 417 counting only the distinct ones).
The product of its digits is 4608, while the sum is 27.
The square root of 216344142 is about 14708.6417455862. The cubic root of 216344142 is about 600.3184809199.
Adding to 216344142 its reverse (241443612), we get a palindrome (457787754).
The spelling of 216344142 in words is "two hundred sixteen million, three hundred forty-four thousand, one hundred forty-two".
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