Base | Representation |
---|---|
bin | 1111100100110… |
… | …11001010000101 |
3 | 100002212011101100 |
4 | 13302123022011 |
5 | 231422041244 |
6 | 20544250313 |
7 | 3144403611 |
oct | 762331205 |
9 | 302764340 |
10 | 130658949 |
11 | 67832003 |
12 | 37910999 |
13 | 210b96b5 |
14 | 134d2341 |
15 | b70db69 |
hex | 7c9b285 |
130658949 has 24 divisors (see below), whose sum is σ = 196068600. Its totient is φ = 83744640.
The previous prime is 130658947. The next prime is 130658971. The reversal of 130658949 is 949856031.
It is a happy number.
It can be written as a sum of positive squares in 4 ways, for example, as 7049025 + 123609924 = 2655^2 + 11118^2 .
It is not a de Polignac number, because 130658949 - 21 = 130658947 is a prime.
It is a Curzon number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (130658947) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69279 + ... + 71139.
It is an arithmetic number, because the mean of its divisors is an integer number (8169525).
Almost surely, 2130658949 is an apocalyptic number.
It is an amenable number.
130658949 is a deficient number, since it is larger than the sum of its proper divisors (65409651).
130658949 is a wasteful number, since it uses less digits than its factorization.
130658949 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2165 (or 2162 counting only the distinct ones).
The product of its (nonzero) digits is 233280, while the sum is 45.
The square root of 130658949 is about 11430.6145504080. The cubic root of 130658949 is about 507.4341833484.
The spelling of 130658949 in words is "one hundred thirty million, six hundred fifty-eight thousand, nine hundred forty-nine".
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