Base | Representation |
---|---|
bin | 1111100000110… |
… | …00010111001010 |
3 | 100001211221111011 |
4 | 13300120113022 |
5 | 231302420320 |
6 | 20524554134 |
7 | 3140012650 |
oct | 760302712 |
9 | 301757434 |
10 | 130123210 |
11 | 674a6548 |
12 | 376b294a |
13 | 20c5c8a9 |
14 | 133d2dd0 |
15 | b65505a |
hex | 7c185ca |
130123210 has 64 divisors (see below), whose sum is σ = 283668480. Its totient is φ = 41981760.
The previous prime is 130123199. The next prime is 130123211. The reversal of 130123210 is 12321031.
It is not an unprimeable number, because it can be changed into a prime (130123211) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 301695 + ... + 302125.
It is an arithmetic number, because the mean of its divisors is an integer number (4432320).
Almost surely, 2130123210 is an apocalyptic number.
130123210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
130123210 is an abundant number, since it is smaller than the sum of its proper divisors (153545270).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
130123210 is a wasteful number, since it uses less digits than its factorization.
130123210 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 691.
The product of its (nonzero) digits is 36, while the sum is 13.
The square root of 130123210 is about 11407.1560872989. The cubic root of 130123210 is about 506.7396915944.
Adding to 130123210 its reverse (12321031), we get a palindrome (142444241).
The spelling of 130123210 in words is "one hundred thirty million, one hundred twenty-three thousand, two hundred ten".
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