Base | Representation |
---|---|
bin | 111001010111… |
… | …1111110010101 |
3 | 2002121021021001 |
4 | 1302233332111 |
5 | 30200042132 |
6 | 2552423301 |
7 | 513453316 |
oct | 162577625 |
9 | 62537231 |
10 | 30080917 |
11 | 15a86269 |
12 | a0a7b31 |
13 | 6302a79 |
14 | 3dd060d |
15 | 2992ce7 |
hex | 1caff95 |
30080917 has 4 divisors (see below), whose sum is σ = 31118220. Its totient is φ = 29043616.
The previous prime is 30080899. The next prime is 30080927. The reversal of 30080917 is 71908003.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71908003 = 31 ⋅2319613.
It can be written as a sum of positive squares in 2 ways, for example, as 20875761 + 9205156 = 4569^2 + 3034^2 .
It is not a de Polignac number, because 30080917 - 219 = 29556629 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30080927) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 518608 + ... + 518665.
It is an arithmetic number, because the mean of its divisors is an integer number (7779555).
Almost surely, 230080917 is an apocalyptic number.
It is an amenable number.
30080917 is a deficient number, since it is larger than the sum of its proper divisors (1037303).
30080917 is a wasteful number, since it uses less digits than its factorization.
30080917 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1037302.
The product of its (nonzero) digits is 1512, while the sum is 28.
The square root of 30080917 is about 5484.6072785570. The cubic root of 30080917 is about 311.0023641704.
The spelling of 30080917 in words is "thirty million, eighty thousand, nine hundred seventeen".
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