| Base | Representation |
|---|---|
| bin | 10001001100011… |
| … | …00011101001100 |
| 3 | 101001101122200000 |
| 4 | 20212030131030 |
| 5 | 243410331340 |
| 6 | 22151204300 |
| 7 | 3400636161 |
| oct | 1046143514 |
| 9 | 331348600 |
| 10 | 144230220 |
| 11 | 74461332 |
| 12 | 40376690 |
| 13 | 23b5b934 |
| 14 | 15226068 |
| 15 | c9ded30 |
| hex | 898c74c |
144230220 has 144 divisors (see below), whose sum is σ = 462309120. Its totient is φ = 37734336.
The previous prime is 144230209. The next prime is 144230231. The reversal of 144230220 is 22032441.
144230220 is a `hidden beast` number, since 1 + 442 + 3 + 0 + 220 = 666.
It is an interprime number because it is at equal distance from previous prime (144230209) and next prime (144230231).
It is a super-2 number, since 2×1442302202 = 41604712722496800, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (18).
It is a junction number, because it is equal to n+sod(n) for n = 144230193 and 144230202.
It is an unprimeable number.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 286489 + ... + 286991.
It is an arithmetic number, because the mean of its divisors is an integer number (3210480).
Almost surely, 2144230220 is an apocalyptic number.
144230220 is a gapful number since it is divisible by the number (10) 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 144230220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (231154560).
144230220 is an abundant number, since it is smaller than the sum of its proper divisors (318078900).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
144230220 is a wasteful number, since it uses less digits than its factorization.
144230220 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 586 (or 572 counting only the distinct ones).
The product of its (nonzero) digits is 384, while the sum is 18.
The square root of 144230220 is about 12009.5886690594. The cubic root of 144230220 is about 524.4274574693.
Adding to 144230220 its reverse (22032441), we get a palindrome (166262661).
The spelling of 144230220 in words is "one hundred forty-four million, two hundred thirty thousand, two hundred twenty".
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