Base | Representation |
---|---|
bin | 111001011101… |
… | …0000011001001 |
3 | 2002200100212111 |
4 | 1302322003021 |
5 | 30202402220 |
6 | 2553342321 |
7 | 514014532 |
oct | 162720311 |
9 | 62610774 |
10 | 30122185 |
11 | 16004275 |
12 | a1079a1 |
13 | 63187a2 |
14 | 4001689 |
15 | 29a015a |
hex | 1cba0c9 |
30122185 has 8 divisors (see below), whose sum is σ = 36218880. Its totient is φ = 24049584.
The previous prime is 30122161. The next prime is 30122221. The reversal of 30122185 is 58122103.
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 30122185 - 25 = 30122153 is a prime.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3145 + ... + 8374.
It is an arithmetic number, because the mean of its divisors is an integer number (4527360).
Almost surely, 230122185 is an apocalyptic number.
It is an amenable number.
30122185 is a deficient number, since it is larger than the sum of its proper divisors (6096695).
30122185 is a wasteful number, since it uses less digits than its factorization.
30122185 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 12047.
The product of its (nonzero) digits is 480, while the sum is 22.
The square root of 30122185 is about 5488.3681545611. The cubic root of 30122185 is about 311.1445205287.
Adding to 30122185 its reverse (58122103), we get a palindrome (88244288).
It can be divided in two parts, 301 and 22185, that multiplied together give a triangular number (6677685 = T3654).
The spelling of 30122185 in words is "thirty million, one hundred twenty-two thousand, one hundred eighty-five".
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