Base | Representation |
---|---|
bin | 11011011011110… |
… | …00000101100010 |
3 | 121001000211001000 |
4 | 31231320011202 |
5 | 432403130033 |
6 | 34500252430 |
7 | 5463033666 |
oct | 1555700542 |
9 | 531024030 |
10 | 230130018 |
11 | 1089a20a8 |
12 | 650a1116 |
13 | 388a6511 |
14 | 227c68a6 |
15 | 1530ba13 |
hex | db78162 |
230130018 has 32 divisors (see below), whose sum is σ = 518414400. Its totient is φ = 75657888.
The previous prime is 230130013. The next prime is 230130073. The reversal of 230130018 is 810031032.
230130018 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a Harshad number since it is a multiple of its sum of digits (18).
It is a Curzon number.
It is not an unprimeable number, because it can be changed into a prime (230130013) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25248 + ... + 33131.
It is an arithmetic number, because the mean of its divisors is an integer number (16200450).
Almost surely, 2230130018 is an apocalyptic number.
230130018 is an abundant number, since it is smaller than the sum of its proper divisors (288284382).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
230130018 is a wasteful number, since it uses less digits than its factorization.
230130018 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 58463 (or 58457 counting only the distinct ones).
The product of its (nonzero) digits is 144, while the sum is 18.
The square root of 230130018 is about 15170.0368489994. The cubic root of 230130018 is about 612.8079965899.
The spelling of 230130018 in words is "two hundred thirty million, one hundred thirty thousand, eighteen".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.067 sec. • engine limits •