Base | Representation |
---|---|
bin | 1111011111111… |
… | …11100111011110 |
3 | 100001122210110020 |
4 | 13233333213132 |
5 | 231241144404 |
6 | 20522453010 |
7 | 3136111314 |
oct | 757774736 |
9 | 301583406 |
10 | 130021854 |
11 | 67437386 |
12 | 37664166 |
13 | 20c25711 |
14 | 133a80b4 |
15 | b634ed9 |
hex | 7bff9de |
130021854 has 8 divisors (see below), whose sum is σ = 260043720. Its totient is φ = 43340616.
The previous prime is 130021847. The next prime is 130021873. The reversal of 130021854 is 458120031.
It is a sphenic number, since it is the product of 3 distinct primes.
130021854 is an admirable number.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10835149 + ... + 10835160.
It is an arithmetic number, because the mean of its divisors is an integer number (32505465).
Almost surely, 2130021854 is an apocalyptic number.
130021854 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
130021854 is a wasteful number, since it uses less digits than its factorization.
130021854 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 21670314.
The product of its (nonzero) digits is 960, while the sum is 24.
The square root of 130021854 is about 11402.7125720155. The cubic root of 130021854 is about 506.6080869678.
Adding to 130021854 its reverse (458120031), we get a palindrome (588141885).
The spelling of 130021854 in words is "one hundred thirty million, twenty-one thousand, eight hundred fifty-four".
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