Base | Representation |
---|---|
bin | 111001111111… |
… | …1100111111001 |
3 | 2010012211210011 |
4 | 1303333213321 |
5 | 30241012121 |
6 | 3003421521 |
7 | 516312421 |
oct | 163774771 |
9 | 63184704 |
10 | 30407161 |
11 | 16189394 |
12 | a2248a1 |
13 | 63b8405 |
14 | 4077481 |
15 | 2a097e1 |
hex | 1cff9f9 |
30407161 has 8 divisors (see below), whose sum is σ = 30913344. Its totient is φ = 29905200.
The previous prime is 30407159. The next prime is 30407177. The reversal of 30407161 is 16170403.
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 30407161 - 21 = 30407159 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (30407141) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15540 + ... + 17386.
It is an arithmetic number, because the mean of its divisors is an integer number (3864168).
Almost surely, 230407161 is an apocalyptic number.
It is an amenable number.
30407161 is a deficient number, since it is larger than the sum of its proper divisors (506183).
30407161 is a wasteful number, since it uses less digits than its factorization.
30407161 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2111.
The product of its (nonzero) digits is 504, while the sum is 22.
The square root of 30407161 is about 5514.2688545264. The cubic root of 30407161 is about 312.1226540823.
Adding to 30407161 its reverse (16170403), we get a palindrome (46577564).
It can be divided in two parts, 3040 and 7161, that added together give a palindrome (10201).
The spelling of 30407161 in words is "thirty million, four hundred seven thousand, one hundred sixty-one".
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