Search a number
-
+
490005 = 32510889
BaseRepresentation
bin1110111101000010101
3220220011100
41313220111
5111140010
614300313
74110405
oct1675025
9826140
10490005
1130516a
121b7699
13142059
14ca805
159a2c0
hex77a15

490005 has 12 divisors (see below), whose sum is σ = 849420. Its totient is φ = 261312.

The previous prime is 490003. The next prime is 490019. The reversal of 490005 is 500094.

It can be written as a sum of positive squares in 2 ways, for example, as 77841 + 412164 = 279^2 + 642^2 .

It is not a de Polignac number, because 490005 - 21 = 490003 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 490005.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 490005.

It is not an unprimeable number, because it can be changed into a prime (490001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5400 + ... + 5489.

It is an arithmetic number, because the mean of its divisors is an integer number (70785).

2490005 is an apocalyptic number.

490005 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

490005 is a deficient number, since it is larger than the sum of its proper divisors (359415).

490005 is a wasteful number, since it uses less digits than its factorization.

490005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10900 (or 10897 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 490005 is about 700.0035714195. The cubic root of 490005 is about 78.8376197844.

Adding to 490005 its reverse (500094), we get a palindrome (990099).

It can be divided in two parts, 4 and 90005, that added together give a palindrome (90009).

The spelling of 490005 in words is "four hundred ninety thousand, five".

Divisors: 1 3 5 9 15 45 10889 32667 54445 98001 163335 490005