Base | Representation |
---|---|
bin | 1010001101000… |
… | …1001110011110 |
3 | 2222112110121022 |
4 | 2203101032132 |
5 | 41424100110 |
6 | 4125204142 |
7 | 1026536300 |
oct | 243211636 |
9 | 88473538 |
10 | 42800030 |
11 | 22183329 |
12 | 12400652 |
13 | 8b37180 |
14 | 5981970 |
15 | 3b56755 |
hex | 28d139e |
42800030 has 48 divisors (see below), whose sum is σ = 96526080. Its totient is φ = 13543488.
The previous prime is 42799949. The next prime is 42800039. The reversal of 42800030 is 3000824.
42800030 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a junction number, because it is equal to n+sod(n) for n = 42799981 and 42800008.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (42800039) 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, 3011 + ... + 9729.
It is an arithmetic number, because the mean of its divisors is an integer number (2010960).
Almost surely, 242800030 is an apocalyptic number.
42800030 is an abundant number, since it is smaller than the sum of its proper divisors (53726050).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
42800030 is a wasteful number, since it uses less digits than its factorization.
42800030 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 6753 (or 6746 counting only the distinct ones).
The product of its (nonzero) digits is 192, while the sum is 17.
The square root of 42800030 is about 6542.1731863350. The cubic root of 42800030 is about 349.7958809815.
Adding to 42800030 its reverse (3000824), we get a palindrome (45800854).
The spelling of 42800030 in words is "forty-two million, eight hundred thousand, thirty".
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