| Base | Representation |
|---|---|
| bin | 10010001101000… |
| … | …110110000100000 |
| 3 | 210021201012221100 |
| 4 | 102031012300200 |
| 5 | 1111142103230 |
| 6 | 50150154400 |
| 7 | 10366034115 |
| oct | 2215066040 |
| 9 | 707635840 |
| 10 | 305425440 |
| 11 | 14744a721 |
| 12 | 86352a00 |
| 13 | 4b37a418 |
| 14 | 2c7c690c |
| 15 | 1bc31660 |
| hex | 12346c20 |
305425440 has 144 divisors (see below), whose sum is σ = 1052048088. Its totient is φ = 80683008.
The previous prime is 305425427. The next prime is 305425447. The reversal of 305425440 is 44524503.
305425440 is a `hidden beast` number, since 30 + 542 + 54 + 40 = 666.
305425440 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.
It can be written as a sum of positive squares in 4 ways, for example, as 170772624 + 134652816 = 13068^2 + 11604^2 .
It is a tau number, because it is divible by the number of its divisors (144).
It is not an unprimeable number, because it can be changed into a prime (305425447) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 161782 + ... + 163658.
Almost surely, 2305425440 is an apocalyptic number.
305425440 is a gapful number since it is divisible by the number (30) 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 305425440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (526024044).
305425440 is an abundant number, since it is smaller than the sum of its proper divisors (746622648).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
305425440 is a wasteful number, since it uses less digits than its factorization.
305425440 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2011 (or 2000 counting only the distinct ones).
The product of its (nonzero) digits is 9600, while the sum is 27.
The square root of 305425440 is about 17476.4252637660. The cubic root of 305425440 is about 673.4443847377. Note that the first 3 decimals are identical.
Adding to 305425440 its reverse (44524503), we get a palindrome (349949943).
The spelling of 305425440 in words is "three hundred five million, four hundred twenty-five thousand, four hundred forty".
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