Base | Representation |
---|---|
bin | 1000101100110101101101 |
3 | 11021212200120 |
4 | 20230311231 |
5 | 1040441223 |
6 | 120515153 |
7 | 25246413 |
oct | 10546555 |
9 | 4255616 |
10 | 2280813 |
11 | 1318677 |
12 | 91bab9 |
13 | 61b1c2 |
14 | 4352b3 |
15 | 300be3 |
hex | 22cd6d |
2280813 has 8 divisors (see below), whose sum is σ = 3048288. Its totient is φ = 1516944.
The previous prime is 2280767. The next prime is 2280823. The reversal of 2280813 is 3180822.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 2280813 - 214 = 2264429 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2280823) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1470 + ... + 2592.
It is an arithmetic number, because the mean of its divisors is an integer number (381036).
22280813 is an apocalyptic number.
It is an amenable number.
2280813 is a deficient number, since it is larger than the sum of its proper divisors (767475).
2280813 is a wasteful number, since it uses less digits than its factorization.
2280813 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1803.
The product of its (nonzero) digits is 768, while the sum is 24.
The square root of 2280813 is about 1510.2360742612. The cubic root of 2280813 is about 131.6325293828.
Subtracting 2280813 from its reverse (3180822), we obtain a palindrome (900009).
The spelling of 2280813 in words is "two million, two hundred eighty thousand, eight hundred thirteen".
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