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286141 = 2771033
BaseRepresentation
bin1000101110110111101
3112112111211
41011312331
533124031
610044421
72301142
oct1056675
9475454
10286141
11185a89
12119711
13a031b
14763c9
1559bb1
hex45dbd

286141 has 4 divisors (see below), whose sum is σ = 287452. Its totient is φ = 284832.

The previous prime is 286129. The next prime is 286163. The reversal of 286141 is 141682.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 141682 = 270841.

It can be written as a sum of positive squares in 2 ways, for example, as 177241 + 108900 = 421^2 + 330^2 .

It is a cyclic number.

It is not a de Polignac number, because 286141 - 29 = 285629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (286171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 240 + ... + 793.

It is an arithmetic number, because the mean of its divisors is an integer number (71863).

2286141 is an apocalyptic number.

It is an amenable number.

286141 is a deficient number, since it is larger than the sum of its proper divisors (1311).

286141 is a wasteful number, since it uses less digits than its factorization.

286141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1310.

The product of its digits is 384, while the sum is 22.

The square root of 286141 is about 534.9214895665. The cubic root of 286141 is about 65.8961482747.

The spelling of 286141 in words is "two hundred eighty-six thousand, one hundred forty-one".

Divisors: 1 277 1033 286141