Base | Representation |
---|---|
bin | 11100001000100001… |
… | …000001011000110101 |
3 | 2212222020000101002110 |
4 | 130020201001120311 |
5 | 443331124121422 |
6 | 21513250401233 |
7 | 2116400514360 |
oct | 341041013065 |
9 | 85866011073 |
10 | 30207645237 |
11 | 118a1478a70 |
12 | 5a30590219 |
13 | 2b053c81c3 |
14 | 1667c5b0d7 |
15 | bbbe9360c |
hex | 708841635 |
30207645237 has 16 divisors (see below), whose sum is σ = 50215306752. Its totient is φ = 15692283120.
The previous prime is 30207645179. The next prime is 30207645241. The reversal of 30207645237 is 73254670203.
It is not a de Polignac number, because 30207645237 - 210 = 30207644213 is a prime.
It is a super-3 number, since 3×302076452373 (a number of 32 digits) contains 333 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 30207645195 and 30207645204.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30207665237) 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 15 ways as a sum of consecutive naturals, for example, 65384283 + ... + 65384744.
It is an arithmetic number, because the mean of its divisors is an integer number (3138456672).
Almost surely, 230207645237 is an apocalyptic number.
It is an amenable number.
30207645237 is a deficient number, since it is larger than the sum of its proper divisors (20007661515).
30207645237 is a wasteful number, since it uses less digits than its factorization.
30207645237 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 130769048.
The product of its (nonzero) digits is 211680, while the sum is 39.
The spelling of 30207645237 in words is "thirty billion, two hundred seven million, six hundred forty-five thousand, two hundred thirty-seven".
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