Base | Representation |
---|---|
bin | 11010101000010… |
… | …00011110001001 |
3 | 120120022221122122 |
4 | 31110020132021 |
5 | 424141201020 |
6 | 34055501025 |
7 | 5351465453 |
oct | 1524103611 |
9 | 516287578 |
10 | 223381385 |
11 | 105102817 |
12 | 62987775 |
13 | 37382846 |
14 | 2194b2d3 |
15 | 14927125 |
hex | d508789 |
223381385 has 12 divisors (see below), whose sum is σ = 282910788. Its totient is φ = 169298208.
The previous prime is 223381373. The next prime is 223381391. The reversal of 223381385 is 583183322.
It can be written as a sum of positive squares in 2 ways, for example, as 123121216 + 100260169 = 11096^2 + 10013^2 .
It is not a de Polignac number, because 223381385 - 24 = 223381369 is a prime.
It is a Duffinian number.
It is an unprimeable number.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60074 + ... + 63683.
It is an arithmetic number, because the mean of its divisors is an integer number (23575899).
Almost surely, 2223381385 is an apocalyptic number.
It is an amenable number.
223381385 is a deficient number, since it is larger than the sum of its proper divisors (59529403).
223381385 is a wasteful number, since it uses less digits than its factorization.
223381385 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 123800 (or 123781 counting only the distinct ones).
The product of its digits is 34560, while the sum is 35.
The square root of 223381385 is about 14945.9487821951. The cubic root of 223381385 is about 606.7582076507.
The spelling of 223381385 in words is "two hundred twenty-three million, three hundred eighty-one thousand, three hundred eighty-five".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.062 sec. • engine limits •