Base | Representation |
---|---|
bin | 1111011111111… |
… | …11100111011101 |
3 | 100001122210110012 |
4 | 13233333213131 |
5 | 231241144403 |
6 | 20522453005 |
7 | 3136111313 |
oct | 757774735 |
9 | 301583405 |
10 | 130021853 |
11 | 67437385 |
12 | 37664165 |
13 | 20c25710 |
14 | 133a80b3 |
15 | b634ed8 |
hex | 7bff9dd |
130021853 has 8 divisors (see below), whose sum is σ = 140181888. Its totient is φ = 119884464.
The previous prime is 130021847. The next prime is 130021873. The reversal of 130021853 is 358120031.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 130021853 - 26 = 130021789 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (130021813) 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, 7400 + ... + 17742.
It is an arithmetic number, because the mean of its divisors is an integer number (17522736).
Almost surely, 2130021853 is an apocalyptic number.
130021853 is a gapful number since it is divisible by the number (13) formed by its first and last digit.
It is an amenable number.
130021853 is a deficient number, since it is larger than the sum of its proper divisors (10160035).
130021853 is a wasteful number, since it uses less digits than its factorization.
130021853 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 11323.
The product of its (nonzero) digits is 720, while the sum is 23.
The square root of 130021853 is about 11402.7125281663. The cubic root of 130021853 is about 506.6080856690.
Adding to 130021853 its reverse (358120031), we get a palindrome (488141884).
It can be divided in two parts, 1300 and 21853, that multiplied together give a square (28408900 = 53302).
The spelling of 130021853 in words is "one hundred thirty million, twenty-one thousand, eight hundred fifty-three".
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