| Base | Representation |
|---|---|
| bin | 11000001110010… |
| … | …10101100101100 |
| 3 | 112011100220102200 |
| 4 | 30013022230230 |
| 5 | 404010033140 |
| 6 | 32055221500 |
| 7 | 5015134425 |
| oct | 1407125454 |
| 9 | 464326380 |
| 10 | 203205420 |
| 11 | a4782270 |
| 12 | 58077890 |
| 13 | 3313a2c2 |
| 14 | 1cdb864c |
| 15 | 12c8e030 |
| hex | c1cab2c |
203205420 has 144 divisors (see below), whose sum is σ = 712097568. Its totient is φ = 46356480.
The previous prime is 203205419. The next prime is 203205421. The reversal of 203205420 is 24502302.
It is an interprime number because it is at equal distance from previous prime (203205419) and next prime (203205421).
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 = 203205393 and 203205402.
It is not an unprimeable number, because it can be changed into a prime (203205421) 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 47 ways as a sum of consecutive naturals, for example, 30642 + ... + 36678.
It is an arithmetic number, because the mean of its divisors is an integer number (4945122).
Almost surely, 2203205420 is an apocalyptic number.
203205420 is a gapful number since it is divisible by the number (20) 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 203205420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (356048784).
203205420 is an abundant number, since it is smaller than the sum of its proper divisors (508892148).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
203205420 is a wasteful number, since it uses less digits than its factorization.
203205420 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 6080 (or 6075 counting only the distinct ones).
The product of its (nonzero) digits is 480, while the sum is 18.
The square root of 203205420 is about 14255.0138547811. The cubic root of 203205420 is about 587.9112388578.
Adding to 203205420 its reverse (24502302), we get a palindrome (227707722).
The spelling of 203205420 in words is "two hundred three million, two hundred five thousand, four hundred twenty".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.072 sec. • engine limits •