Base | Representation |
---|---|
bin | 11001101000110… |
… | …11000100101000 |
3 | 112222200122011100 |
4 | 30310123010220 |
5 | 420024201333 |
6 | 33201401400 |
7 | 5221025142 |
oct | 1464330450 |
9 | 488618140 |
10 | 215068968 |
11 | 100445554 |
12 | 60039260 |
13 | 3573215a |
14 | 207c5c92 |
15 | 13d34213 |
hex | cd1b128 |
215068968 has 48 divisors (see below), whose sum is σ = 589867200. Its totient is φ = 70780320.
The previous prime is 215068957. The next prime is 215068991. The reversal of 215068968 is 869860512.
215068968 is a `hidden beast` number, since 2 + 1 + 506 + 89 + 68 = 666.
It is an unprimeable number.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13218 + ... + 24593.
It is an arithmetic number, because the mean of its divisors is an integer number (12288900).
Almost surely, 2215068968 is an apocalyptic number.
It is an amenable number.
215068968 is an abundant number, since it is smaller than the sum of its proper divisors (374798232).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
215068968 is a wasteful number, since it uses less digits than its factorization.
215068968 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 37902 (or 37895 counting only the distinct ones).
The product of its (nonzero) digits is 207360, while the sum is 45.
The square root of 215068968 is about 14665.2298993231. The cubic root of 215068968 is about 599.1366917606.
The spelling of 215068968 in words is "two hundred fifteen million, sixty-eight thousand, nine hundred sixty-eight".
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