| Base | Representation |
|---|---|
| bin | 1000001110011101… |
| … | …0110001100110000 |
| 3 | 12200212222121200200 |
| 4 | 2003213112030300 |
| 5 | 14010240123330 |
| 6 | 1003035515200 |
| 7 | 105501536220 |
| oct | 20347261460 |
| 9 | 5625877620 |
| 10 | 2208129840 |
| 11 | a334826a4 |
| 12 | 5175b8b00 |
| 13 | 292619c07 |
| 14 | 16d396080 |
| 15 | cdcc5a60 |
| hex | 839d6330 |
2208129840 has 240 divisors, whose sum is σ = 8921452800. Its totient is φ = 478130688.
The previous prime is 2208129839. The next prime is 2208129841. The reversal of 2208129840 is 489218022.
It is an interprime number because it is at equal distance from previous prime (2208129839) and next prime (2208129841).
It is a tau number, because it is divible by the number of its divisors (240).
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a junction number, because it is equal to n+sod(n) for n = 2208129795 and 2208129804.
It is not an unprimeable number, because it can be changed into a prime (2208129841) by changing a digit.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 84231 + ... + 107289.
It is an arithmetic number, because the mean of its divisors is an integer number (37172720).
Almost surely, 22208129840 is an apocalyptic number.
2208129840 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 2208129840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4460726400).
2208129840 is an abundant number, since it is smaller than the sum of its proper divisors (6713322960).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
2208129840 is a wasteful number, since it uses less digits than its factorization.
2208129840 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 23104 (or 23095 counting only the distinct ones).
The product of its (nonzero) digits is 18432, while the sum is 36.
The square root of 2208129840 is about 46990.7420669221. The cubic root of 2208129840 is about 1302.1915381461.
The spelling of 2208129840 in words is "two billion, two hundred eight million, one hundred twenty-nine thousand, eight hundred forty".
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