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490841 = 13172221
BaseRepresentation
bin1110111110101011001
3220221022022
41313311121
5111201331
614304225
74113011
oct1676531
9827268
10490841
1130585a
121b8075
13142550
14cac41
159a67b
hex77d59

490841 has 8 divisors (see below), whose sum is σ = 559944. Its totient is φ = 426240.

The previous prime is 490837. The next prime is 490849. The reversal of 490841 is 148094.

It can be written as a sum of positive squares in 4 ways, for example, as 87616 + 403225 = 296^2 + 635^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 490841 - 22 = 490837 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 490841.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (490849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 890 + ... + 1331.

It is an arithmetic number, because the mean of its divisors is an integer number (69993).

2490841 is an apocalyptic number.

It is an amenable number.

490841 is a deficient number, since it is larger than the sum of its proper divisors (69103).

490841 is a wasteful number, since it uses less digits than its factorization.

490841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2251.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 490841 is about 700.6004567512. The cubic root of 490841 is about 78.8824293976.

It can be divided in two parts, 490 and 841, that added together give a palindrome (1331).

The spelling of 490841 in words is "four hundred ninety thousand, eight hundred forty-one".

Divisors: 1 13 17 221 2221 28873 37757 490841