Base | Representation |
---|---|
bin | 111001011010… |
… | …1111110001001 |
3 | 2002122111221211 |
4 | 1302311332021 |
5 | 30201333411 |
6 | 2553133121 |
7 | 513615040 |
oct | 162657611 |
9 | 62574854 |
10 | 30105481 |
11 | 15aa276a |
12 | a0ba1a1 |
13 | 6310cc3 |
14 | 3dd9557 |
15 | 299a221 |
hex | 1cb5f89 |
30105481 has 8 divisors (see below), whose sum is σ = 36217280. Its totient is φ = 24446448.
The previous prime is 30105463. The next prime is 30105499. The reversal of 30105481 is 18450103.
It is an interprime number because it is at equal distance from previous prime (30105463) and next prime (30105499).
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 30105481 - 27 = 30105353 is a prime.
It is a super-2 number, since 2×301054812 = 1812679972482722, which contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (30105401) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113046 + ... + 113311.
It is an arithmetic number, because the mean of its divisors is an integer number (4527160).
Almost surely, 230105481 is an apocalyptic number.
It is an amenable number.
30105481 is a deficient number, since it is larger than the sum of its proper divisors (6111799).
30105481 is a wasteful number, since it uses less digits than its factorization.
30105481 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 226383.
The product of its (nonzero) digits is 480, while the sum is 22.
The square root of 30105481 is about 5486.8461797284. The cubic root of 30105481 is about 311.0869957168.
Adding to 30105481 its reverse (18450103), we get a palindrome (48555584).
The spelling of 30105481 in words is "thirty million, one hundred five thousand, four hundred eighty-one".
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