Base | Representation |
---|---|
bin | 1111011111111… |
… | …11111011010000 |
3 | 100001122212012010 |
4 | 13233333323100 |
5 | 231241214440 |
6 | 20522502520 |
7 | 3136115103 |
oct | 757777320 |
9 | 301585163 |
10 | 130023120 |
11 | 67438327 |
12 | 37664a40 |
13 | 20c26176 |
14 | 133a873a |
15 | b635580 |
hex | 7bffed0 |
130023120 has 40 divisors (see below), whose sum is σ = 403072416. Its totient is φ = 34672768.
The previous prime is 130023119. The next prime is 130023121. The reversal of 130023120 is 21320031.
It is a happy number.
It is an interprime number because it is at equal distance from previous prime (130023119) and next prime (130023121).
It is a tau number, because it is divible by the number of its divisors (40).
It is a Harshad number since it is a multiple of its sum of digits (12).
It is a junction number, because it is equal to n+sod(n) for n = 130023096 and 130023105.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (130023121) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 270642 + ... + 271121.
Almost surely, 2130023120 is an apocalyptic number.
130023120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
130023120 is an abundant number, since it is smaller than the sum of its proper divisors (273049296).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
130023120 is a wasteful number, since it uses less digits than its factorization.
130023120 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 541779 (or 541773 counting only the distinct ones).
The product of its (nonzero) digits is 36, while the sum is 12.
The square root of 130023120 is about 11402.7680849871. The cubic root of 130023120 is about 506.6097312138.
Adding to 130023120 its reverse (21320031), we get a palindrome (151343151).
The spelling of 130023120 in words is "one hundred thirty million, twenty-three thousand, one hundred twenty".
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