Base | Representation |
---|---|
bin | 111001101001… |
… | …0111100001111 |
3 | 2002212112201201 |
4 | 1303102330033 |
5 | 30214133033 |
6 | 2555450331 |
7 | 514621015 |
oct | 163227417 |
9 | 62775651 |
10 | 30224143 |
11 | 16073934 |
12 | a1569a7 |
13 | 6353011 |
14 | 402a8b5 |
15 | 29c047d |
hex | 1cd2f0f |
30224143 has 2 divisors, whose sum is σ = 30224144. Its totient is φ = 30224142.
The previous prime is 30224123. The next prime is 30224167. The reversal of 30224143 is 34142203.
It is a weak prime.
It is an emirp because it is prime and its reverse (34142203) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 30224143 - 25 = 30224111 is a prime.
It is a self number, because there is not a number n which added to its sum of digits gives 30224143.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (30224123) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15112071 + 15112072.
It is an arithmetic number, because the mean of its divisors is an integer number (15112072).
Almost surely, 230224143 is an apocalyptic number.
30224143 is a deficient number, since it is larger than the sum of its proper divisors (1).
30224143 is an equidigital number, since it uses as much as digits as its factorization.
30224143 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 576, while the sum is 19.
The square root of 30224143 is about 5497.6488611042. The cubic root of 30224143 is about 311.4951806514.
Adding to 30224143 its reverse (34142203), we get a palindrome (64366346).
The spelling of 30224143 in words is "thirty million, two hundred twenty-four thousand, one hundred forty-three".
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