Base | Representation |
---|---|
bin | 111001010001… |
… | …0010010110001 |
3 | 2002111102101122 |
4 | 1302202102301 |
5 | 30141244011 |
6 | 2551312025 |
7 | 513131045 |
oct | 162422261 |
9 | 62442348 |
10 | 30024881 |
11 | 15a48157 |
12 | a07b615 |
13 | 62b3403 |
14 | 3db8025 |
15 | 29813db |
hex | 1ca24b1 |
30024881 has 2 divisors, whose sum is σ = 30024882. Its totient is φ = 30024880.
The previous prime is 30024857. The next prime is 30024887. The reversal of 30024881 is 18842003.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 28090000 + 1934881 = 5300^2 + 1391^2 .
It is an emirp because it is prime and its reverse (18842003) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 30024881 - 214 = 30008497 is a prime.
It is a super-2 number, since 2×300248812 = 1802986958128322, which contains 22 as substring.
It is a self number, because there is not a number n which added to its sum of digits gives 30024881.
It is not a weakly prime, because it can be changed into another prime (30024887) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15012440 + 15012441.
It is an arithmetic number, because the mean of its divisors is an integer number (15012441).
Almost surely, 230024881 is an apocalyptic number.
It is an amenable number.
30024881 is a deficient number, since it is larger than the sum of its proper divisors (1).
30024881 is an equidigital number, since it uses as much as digits as its factorization.
30024881 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 1536, while the sum is 26.
The square root of 30024881 is about 5479.4964184677. The cubic root of 30024881 is about 310.8091280273.
Adding to 30024881 its reverse (18842003), we get a palindrome (48866884).
The spelling of 30024881 in words is "thirty million, twenty-four thousand, eight hundred eighty-one".
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