| Base | Representation |
|---|---|
| bin | 11001110001101… |
| … | …10100110001000 |
| 3 | 120001212122011220 |
| 4 | 30320312212020 |
| 5 | 420323332110 |
| 6 | 33242322040 |
| 7 | 5233632660 |
| oct | 1470664610 |
| 9 | 501778156 |
| 10 | 216230280 |
| 11 | 101069012 |
| 12 | 604b9320 |
| 13 | 35a4a916 |
| 14 | 20a091a0 |
| 15 | 13eb3370 |
| hex | ce36988 |
216230280 has 128 divisors (see below), whose sum is σ = 754099200. Its totient is φ = 48575232.
The previous prime is 216230263. The next prime is 216230297. The reversal of 216230280 is 82032612.
It is an interprime number because it is at equal distance from previous prime (216230263) and next prime (216230297).
It is a Harshad number since it is a multiple of its sum of digits (24).
It is a self number, because there is not a number n which added to its sum of digits gives 216230280.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47379 + ... + 51741.
It is an arithmetic number, because the mean of its divisors is an integer number (5891400).
Almost surely, 2216230280 is an apocalyptic number.
216230280 is a gapful number since it is divisible by the number (20) 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 216230280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (377049600).
216230280 is an abundant number, since it is smaller than the sum of its proper divisors (537868920).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
216230280 is a wasteful number, since it uses less digits than its factorization.
216230280 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 4443 (or 4439 counting only the distinct ones).
The product of its (nonzero) digits is 1152, while the sum is 24.
The square root of 216230280 is about 14704.7706544509. The cubic root of 216230280 is about 600.2131464942.
Adding to 216230280 its reverse (82032612), we get a palindrome (298262892).
The spelling of 216230280 in words is "two hundred sixteen million, two hundred thirty thousand, two hundred eighty".
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