Base | Representation |
---|---|
bin | 10001011001010… |
… | …11011111110110 |
3 | 101011121000122100 |
4 | 20230223133312 |
5 | 244324231410 |
6 | 22251442530 |
7 | 3421246365 |
oct | 1054533766 |
9 | 334530570 |
10 | 145930230 |
11 | 754125a6 |
12 | 40a56446 |
13 | 24305664 |
14 | 155497dc |
15 | cc288c0 |
hex | 8b2b7f6 |
145930230 has 48 divisors (see below), whose sum is σ = 381101760. Its totient is φ = 38742144.
The previous prime is 145930229. The next prime is 145930243. The reversal of 145930230 is 32039541.
It is a Curzon number.
It is a junction number, because it is equal to n+sod(n) for n = 145930194 and 145930203.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17491 + ... + 24449.
It is an arithmetic number, because the mean of its divisors is an integer number (7939620).
Almost surely, 2145930230 is an apocalyptic number.
145930230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is a practical number, because each smaller number is the sum of distinct divisors of 145930230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190550880).
145930230 is an abundant number, since it is smaller than the sum of its proper divisors (235171530).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
145930230 is a wasteful number, since it uses less digits than its factorization.
145930230 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 7205 (or 7202 counting only the distinct ones).
The product of its (nonzero) digits is 3240, while the sum is 27.
The square root of 145930230 is about 12080.1585254499. The cubic root of 145930230 is about 526.4798519358.
Adding to 145930230 its reverse (32039541), we get a palindrome (177969771).
The spelling of 145930230 in words is "one hundred forty-five million, nine hundred thirty thousand, two hundred thirty".
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