Base | Representation |
---|---|
bin | 111001110000… |
… | …1010001001111 |
3 | 2002222112020100 |
4 | 1303201101033 |
5 | 30223022311 |
6 | 3001022143 |
7 | 515254065 |
oct | 163412117 |
9 | 62875210 |
10 | 30282831 |
11 | 16103a37 |
12 | a184953 |
13 | 6373947 |
14 | 4044035 |
15 | 29d2a56 |
hex | 1ce144f |
30282831 has 12 divisors (see below), whose sum is σ = 46315152. Its totient is φ = 19000896.
The previous prime is 30282829. The next prime is 30282841. The reversal of 30282831 is 13828203.
It is not a de Polignac number, because 30282831 - 21 = 30282829 is a prime.
It is a super-2 number, since 2×302828312 = 1834099706749122, which contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 30282795 and 30282804.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30282821) 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 11 ways as a sum of consecutive naturals, for example, 98811 + ... + 99116.
It is an arithmetic number, because the mean of its divisors is an integer number (3859596).
Almost surely, 230282831 is an apocalyptic number.
30282831 is a deficient number, since it is larger than the sum of its proper divisors (16032321).
30282831 is a wasteful number, since it uses less digits than its factorization.
30282831 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 197950 (or 197947 counting only the distinct ones).
The product of its (nonzero) digits is 2304, while the sum is 27.
The square root of 30282831 is about 5502.9838269797. The cubic root of 30282831 is about 311.6966664797.
It can be divided in two parts, 30282 and 831, that added together give a palindrome (31113).
The spelling of 30282831 in words is "thirty million, two hundred eighty-two thousand, eight hundred thirty-one".
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