Search a number
-
+
386005 = 577201
BaseRepresentation
bin1011110001111010101
3201121111111
41132033111
544323010
612135021
73165244
oct1361725
9647444
10386005
11244014
12167471
13106909
14a095b
157958a
hex5e3d5

386005 has 4 divisors (see below), whose sum is σ = 463212. Its totient is φ = 308800.

The previous prime is 385997. The next prime is 386017. The reversal of 386005 is 500683.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 500683 = 1034861.

It can be written as a sum of positive squares in 2 ways, for example, as 64516 + 321489 = 254^2 + 567^2 .

It is not a de Polignac number, because 386005 - 23 = 385997 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

386005 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38596 + ... + 38605.

It is an arithmetic number, because the mean of its divisors is an integer number (115803).

2386005 is an apocalyptic number.

It is an amenable number.

386005 is a deficient number, since it is larger than the sum of its proper divisors (77207).

386005 is an equidigital number, since it uses as much as digits as its factorization.

386005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77206.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 386005 is about 621.2930065597. The cubic root of 386005 is about 72.8111085774.

Adding to 386005 its reverse (500683), we get a palindrome (886688).

The spelling of 386005 in words is "three hundred eighty-six thousand, five".

Divisors: 1 5 77201 386005