Base | Representation |
---|---|
bin | 10001000000100… |
… | …111010000001001 |
3 | 201212222110210000 |
4 | 101000213100021 |
5 | 1041023422244 |
6 | 44152313213 |
7 | 10033430364 |
oct | 2100472011 |
9 | 655873700 |
10 | 285373449 |
11 | 1370a4329 |
12 | 7b6a2809 |
13 | 4717943a |
14 | 29c870db |
15 | 1a0c0169 |
hex | 11027409 |
285373449 has 15 divisors (see below), whose sum is σ = 426525847. Its totient is φ = 190147608.
The previous prime is 285373423. The next prime is 285373453. The reversal of 285373449 is 944373582.
The square root of 285373449 is 16893.
It is a perfect power (a square), and thus also a powerful number.
It can be written as a sum of positive squares in only one way, i.e., 178623225 + 106750224 = 13365^2 + 10332^2 .
It is not a de Polignac number, because 285373449 - 215 = 285340681 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (285373549) by changing a digit.
It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 151099 + ... + 152975.
Almost surely, 2285373449 is an apocalyptic number.
285373449 is the 16893-rd square number.
285373449 is the 8447-th centered octagonal number.
It is an amenable number.
285373449 is a deficient number, since it is larger than the sum of its proper divisors (141152398).
285373449 is an frugal number, since it uses more digits than its factorization.
285373449 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3766 (or 1880 counting only the distinct ones).
The product of its digits is 725760, while the sum is 45.
The cubic root of 285373449 is about 658.3717508034.
The spelling of 285373449 in words is "two hundred eighty-five million, three hundred seventy-three thousand, four hundred forty-nine".
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