Base | Representation |
---|---|
bin | 11001101010101… |
… | …01111100110010 |
3 | 120000010212222021 |
4 | 30311111330302 |
5 | 420104411010 |
6 | 33210502054 |
7 | 5223051220 |
oct | 1465257462 |
9 | 500125867 |
10 | 215310130 |
11 | 10059a762 |
12 | 6013492a |
13 | 357b7b59 |
14 | 20849b10 |
15 | 13d808da |
hex | cd55f32 |
215310130 has 32 divisors (see below), whose sum is σ = 462184704. Its totient is φ = 70610496.
The previous prime is 215310119. The next prime is 215310131. The reversal of 215310130 is 31013512.
It is a super-3 number, since 3×2153101303 (a number of 26 digits) contains 333 as substring.
It is not an unprimeable number, because it can be changed into a prime (215310131) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65257 + ... + 68476.
It is an arithmetic number, because the mean of its divisors is an integer number (14443272).
Almost surely, 2215310130 is an apocalyptic number.
215310130 is an abundant number, since it is smaller than the sum of its proper divisors (246874574).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
215310130 is a wasteful number, since it uses less digits than its factorization.
215310130 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 133770.
The product of its (nonzero) digits is 90, while the sum is 16.
The square root of 215310130 is about 14673.4498329466. The cubic root of 215310130 is about 599.3605502302.
Adding to 215310130 its reverse (31013512), we get a palindrome (246323642).
The spelling of 215310130 in words is "two hundred fifteen million, three hundred ten thousand, one hundred thirty".
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