Base | Representation |
---|---|
bin | 1111011111111… |
… | …10111000001110 |
3 | 100001122122022020 |
4 | 13233332320032 |
5 | 231241100310 |
6 | 20522431010 |
7 | 3136066434 |
oct | 757767016 |
9 | 301578266 |
10 | 130018830 |
11 | 67435087 |
12 | 37662466 |
13 | 20c24226 |
14 | 133a6d54 |
15 | b634170 |
hex | 7bfee0e |
130018830 has 32 divisors (see below), whose sum is σ = 312570144. Its totient is φ = 34613376.
The previous prime is 130018787. The next prime is 130018841. The reversal of 130018830 is 38810031.
It is a self number, because there is not a number n which added to its sum of digits gives 130018830.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16272 + ... + 22908.
It is an arithmetic number, because the mean of its divisors is an integer number (9767817).
Almost surely, 2130018830 is an apocalyptic number.
130018830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
130018830 is an abundant number, since it is smaller than the sum of its proper divisors (182551314).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
130018830 is a wasteful number, since it uses less digits than its factorization.
130018830 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 7300.
The product of its (nonzero) digits is 576, while the sum is 24.
The square root of 130018830 is about 11402.5799712170. The cubic root of 130018830 is about 506.6041594364.
Adding to 130018830 its reverse (38810031), we get a palindrome (168828861).
The spelling of 130018830 in words is "one hundred thirty million, eighteen thousand, eight hundred thirty".
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