Base | Representation |
---|---|
bin | 111001110001… |
… | …0001111101000 |
3 | 2002222201201020 |
4 | 1303202033220 |
5 | 30223134244 |
6 | 3001052440 |
7 | 515301531 |
oct | 163421750 |
9 | 62881636 |
10 | 30286824 |
11 | 16106a37 |
12 | a187120 |
13 | 63756c9 |
14 | 4045688 |
15 | 29d3d19 |
hex | 1ce23e8 |
30286824 has 64 divisors (see below), whose sum is σ = 78321600. Its totient is φ = 9755136.
The previous prime is 30286811. The next prime is 30286829. The reversal of 30286824 is 42868203.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30286829) 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, 103222 + ... + 103514.
It is an arithmetic number, because the mean of its divisors is an integer number (1223775).
Almost surely, 230286824 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 30286824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39160800).
30286824 is an abundant number, since it is smaller than the sum of its proper divisors (48034776).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30286824 is a wasteful number, since it uses less digits than its factorization.
30286824 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 434 (or 430 counting only the distinct ones).
The product of its (nonzero) digits is 18432, while the sum is 33.
The square root of 30286824 is about 5503.3466181952. The cubic root of 30286824 is about 311.7103656623.
The spelling of 30286824 in words is "thirty million, two hundred eighty-six thousand, eight hundred twenty-four".
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