Base | Representation |
---|---|
bin | 11011011110101… |
… | …11010011011110 |
3 | 121001202122000220 |
4 | 31233113103132 |
5 | 433003120110 |
6 | 34512502210 |
7 | 5466250026 |
oct | 1557272336 |
9 | 531678026 |
10 | 230520030 |
11 | 109139124 |
12 | 6524a966 |
13 | 389b1bb0 |
14 | 22888a86 |
15 | 15387370 |
hex | dbd74de |
230520030 has 128 divisors (see below), whose sum is σ = 642539520. Its totient is φ = 52462080.
The previous prime is 230520023. The next prime is 230520047. The reversal of 230520030 is 30025032.
It is a Harshad number since it is a multiple of its sum of digits (15).
It is a junction number, because it is equal to n+sod(n) for n = 230519991 and 230520009.
It is a congruent number.
It is an unprimeable number.
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 63 ways as a sum of consecutive naturals, for example, 277656 + ... + 278484.
It is an arithmetic number, because the mean of its divisors is an integer number (5019840).
Almost surely, 2230520030 is an apocalyptic number.
It is a practical number, because each smaller number is the sum of distinct divisors of 230520030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321269760).
230520030 is an abundant number, since it is smaller than the sum of its proper divisors (412019490).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
230520030 is a wasteful number, since it uses less digits than its factorization.
230520030 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 906.
The product of its (nonzero) digits is 180, while the sum is 15.
The square root of 230520030 is about 15182.8860892783. The cubic root of 230520030 is about 613.1539859068.
Adding to 230520030 its reverse (30025032), we get a palindrome (260545062).
The spelling of 230520030 in words is "two hundred thirty million, five hundred twenty thousand, thirty".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.066 sec. • engine limits •