Base | Representation |
---|---|
bin | 111001111101… |
… | …0010011010000 |
3 | 2010011201212201 |
4 | 1303322103100 |
5 | 30234312420 |
6 | 3003132544 |
7 | 516162025 |
oct | 163722320 |
9 | 63151781 |
10 | 30385360 |
11 | 16173a75 |
12 | a214154 |
13 | 63ab505 |
14 | 406d54c |
15 | 2a0310a |
hex | 1cfa4d0 |
30385360 has 20 divisors (see below), whose sum is σ = 70646148. Its totient is φ = 12154112.
The previous prime is 30385357. The next prime is 30385393. The reversal of 30385360 is 6358303.
It can be written as a sum of positive squares in 2 ways, for example, as 23541904 + 6843456 = 4852^2 + 2616^2 .
It is a tau number, because it is divible by the number of its divisors (20).
It is a congruent number.
It is an unprimeable number.
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 3 ways as a sum of consecutive naturals, for example, 189829 + ... + 189988.
Almost surely, 230385360 is an apocalyptic number.
It is an amenable number.
30385360 is an abundant number, since it is smaller than the sum of its proper divisors (40260788).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30385360 is a wasteful number, since it uses less digits than its factorization.
30385360 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 379830 (or 379824 counting only the distinct ones).
The product of its (nonzero) digits is 6480, while the sum is 28.
The square root of 30385360 is about 5512.2917194212. The cubic root of 30385360 is about 312.0480421309.
The spelling of 30385360 in words is "thirty million, three hundred eighty-five thousand, three hundred sixty".
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