Base | Representation |
---|---|
bin | 111010110101… |
… | …0100001100110 |
3 | 2011001002102112 |
4 | 1311222201212 |
5 | 30344020110 |
6 | 3021041022 |
7 | 523115126 |
oct | 165524146 |
9 | 64032375 |
10 | 30845030 |
11 | 16458367 |
12 | a3b6172 |
13 | 650c7c8 |
14 | 414cc86 |
15 | 2a94405 |
hex | 1d6a866 |
30845030 has 16 divisors (see below), whose sum is σ = 56095200. Its totient is φ = 12210432.
The previous prime is 30845011. The next prime is 30845033. The reversal of 30845030 is 3054803.
It is a Curzon number.
It is a junction number, because it is equal to n+sod(n) for n = 30844987 and 30845005.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30845033) 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 7 ways as a sum of consecutive naturals, for example, 14930 + ... + 16869.
It is an arithmetic number, because the mean of its divisors is an integer number (3505950).
Almost surely, 230845030 is an apocalyptic number.
30845030 is a deficient number, since it is larger than the sum of its proper divisors (25250170).
30845030 is a wasteful number, since it uses less digits than its factorization.
30845030 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 31903.
The product of its (nonzero) digits is 1440, while the sum is 23.
The square root of 30845030 is about 5553.8302098642. The cubic root of 30845030 is about 313.6137284333.
Adding to 30845030 its reverse (3054803), we get a palindrome (33899833).
The spelling of 30845030 in words is "thirty million, eight hundred forty-five thousand, thirty".
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