| Base | Representation |
|---|---|
| bin | 11110011101010… |
| … | …00011011010000 |
| 3 | 122210202102122211 |
| 4 | 33032220123100 |
| 5 | 1010401300330 |
| 6 | 41204041504 |
| 7 | 6221443000 |
| oct | 1716503320 |
| 9 | 583672584 |
| 10 | 255493840 |
| 11 | 121246338 |
| 12 | 71693294 |
| 13 | 40c171b4 |
| 14 | 25d0a000 |
| 15 | 1766bd2a |
| hex | f3a86d0 |
255493840 has 80 divisors (see below), whose sum is σ = 692812800. Its totient is φ = 87588480.
The previous prime is 255493811. The next prime is 255493841. The reversal of 255493840 is 48394552.
255493840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a tau number, because it is divible by the number of its divisors (80).
It is a Harshad number since it is a multiple of its sum of digits (40).
It is a junction number, because it is equal to n+sod(n) for n = 255493793 and 255493802.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (255493841) 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, 22785 + ... + 32095.
It is an arithmetic number, because the mean of its divisors is an integer number (8660160).
Almost surely, 2255493840 is an apocalyptic number.
255493840 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 255493840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (346406400).
255493840 is an abundant number, since it is smaller than the sum of its proper divisors (437318960).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
255493840 is an equidigital number, since it uses as much as digits as its factorization.
255493840 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 9345 (or 9325 counting only the distinct ones).
The product of its (nonzero) digits is 172800, while the sum is 40.
The square root of 255493840 is about 15984.1746737203. The cubic root of 255493840 is about 634.5416660780.
The spelling of 255493840 in words is "two hundred fifty-five million, four hundred ninety-three thousand, eight hundred forty".
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