Base | Representation |
---|---|
bin | 1010011100110111… |
… | …0110010010001101 |
3 | 21020111220101000111 |
4 | 2213031312102031 |
5 | 21221142102133 |
6 | 1142214000021 |
7 | 126343502326 |
oct | 24715662215 |
9 | 7214811014 |
10 | 2805425293 |
11 | 120a653600 |
12 | 663646011 |
13 | 3592a9788 |
14 | 1c883744d |
15 | 11645c1cd |
hex | a737648d |
2805425293 has 12 divisors (see below), whose sum is σ = 3100900320. Its totient is φ = 2536119080.
The previous prime is 2805425291. The next prime is 2805425303. The reversal of 2805425293 is 3925245082.
It is not a de Polignac number, because 2805425293 - 21 = 2805425291 is a prime.
It is a super-2 number, since 2×28054252932 = 15740822149208271698, which contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2805425291) by changing a digit.
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 11 ways as a sum of consecutive naturals, for example, 43105 + ... + 86422.
It is an arithmetic number, because the mean of its divisors is an integer number (258408360).
Almost surely, 22805425293 is an apocalyptic number.
It is an amenable number.
2805425293 is a deficient number, since it is larger than the sum of its proper divisors (295475027).
2805425293 is a wasteful number, since it uses less digits than its factorization.
2805425293 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 129728 (or 129717 counting only the distinct ones).
The product of its (nonzero) digits is 172800, while the sum is 40.
The square root of 2805425293 is about 52966.2656131240. The cubic root of 2805425293 is about 1410.3694843444.
The spelling of 2805425293 in words is "two billion, eight hundred five million, four hundred twenty-five thousand, two hundred ninety-three".
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