Base | Representation |
---|---|
bin | 111001010011… |
… | …0101111001000 |
3 | 2002112100100200 |
4 | 1302212233020 |
5 | 30142334310 |
6 | 2551532200 |
7 | 513235104 |
oct | 162465710 |
9 | 62470320 |
10 | 30043080 |
11 | 15a5a8a1 |
12 | a08a060 |
13 | 62bb792 |
14 | 3dc0904 |
15 | 29869c0 |
hex | 1ca6bc8 |
30043080 has 96 divisors (see below), whose sum is σ = 103404600. Its totient is φ = 7538688.
The previous prime is 30043073. The next prime is 30043081. The reversal of 30043080 is 8034003.
It can be written as a sum of positive squares in 4 ways, for example, as 30008484 + 34596 = 5478^2 + 186^2 .
It is a Harshad number since it is a multiple of its sum of digits (18).
It is not an unprimeable number, because it can be changed into a prime (30043081) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3666 + ... + 8574.
Almost surely, 230043080 is an apocalyptic number.
30043080 is a gapful number since it is divisible by the number (30) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 30043080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51702300).
30043080 is an abundant number, since it is smaller than the sum of its proper divisors (73361520).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30043080 is a wasteful number, since it uses less digits than its factorization.
30043080 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 4943 (or 4936 counting only the distinct ones).
The product of its (nonzero) digits is 288, while the sum is 18.
The square root of 30043080 is about 5481.1568122067. The cubic root of 30043080 is about 310.8719123213.
Adding to 30043080 its reverse (8034003), we get a palindrome (38077083).
It can be divided in two parts, 3004 and 3080, that added together give a square (6084 = 782).
The spelling of 30043080 in words is "thirty million, forty-three thousand, eighty".
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