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289060 = 22597149
BaseRepresentation
bin1000110100100100100
3112200111221
41012210210
533222220
610110124
72312512
oct1064444
9480457
10289060
111881a2
1211b344
13a1755
14774b2
155a9aa
hex46924

289060 has 24 divisors (see below), whose sum is σ = 617400. Its totient is φ = 113664.

The previous prime is 289049. The next prime is 289063. The reversal of 289060 is 60982.

It can be written as a sum of positive squares in 4 ways, for example, as 1764 + 287296 = 42^2 + 536^2 .

It is a nialpdrome in base 5.

It is not an unprimeable number, because it can be changed into a prime (289063) by changing a digit.

289060 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1866 + ... + 2014.

It is an arithmetic number, because the mean of its divisors is an integer number (25725).

2289060 is an apocalyptic number.

289060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

289060 is an abundant number, since it is smaller than the sum of its proper divisors (328340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

289060 is a wasteful number, since it uses less digits than its factorization.

289060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255 (or 253 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 289060 is about 537.6430042324. The cubic root of 289060 is about 66.1194652929.

The spelling of 289060 in words is "two hundred eighty-nine thousand, sixty".

Divisors: 1 2 4 5 10 20 97 149 194 298 388 485 596 745 970 1490 1940 2980 14453 28906 57812 72265 144530 289060