Base | Representation |
---|---|
bin | 11001101101011… |
… | …11010110100000 |
3 | 120000211111021212 |
4 | 30312233112200 |
5 | 420203120240 |
6 | 33222405252 |
7 | 5226134636 |
oct | 1466572640 |
9 | 500744255 |
10 | 215676320 |
11 | 10081a8a2 |
12 | 60290828 |
13 | 358b5732 |
14 | 20903356 |
15 | 13e04165 |
hex | cdaf5a0 |
215676320 has 96 divisors (see below), whose sum is σ = 523998720. Its totient is φ = 83865600.
The previous prime is 215676319. The next prime is 215676337. The reversal of 215676320 is 23676512.
Together with 308322399 it forms a betrothed pair.
It is a Harshad number since it is a multiple of its sum of digits (32).
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1428245 + ... + 1428395.
It is an arithmetic number, because the mean of its divisors is an integer number (5458320).
Almost surely, 2215676320 is an apocalyptic number.
215676320 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 215676320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261999360).
215676320 is an abundant number, since it is smaller than the sum of its proper divisors (308322400).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
215676320 is a wasteful number, since it uses less digits than its factorization.
215676320 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 358 (or 350 counting only the distinct ones).
The product of its (nonzero) digits is 15120, while the sum is 32.
The square root of 215676320 is about 14685.9225110308. The cubic root of 215676320 is about 599.7001464677.
The spelling of 215676320 in words is "two hundred fifteen million, six hundred seventy-six thousand, three hundred twenty".
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