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289160 = 2357229
BaseRepresentation
bin1000110100110001000
3112200122122
41012212020
533223120
610110412
72313014
oct1064610
9480578
10289160
11188283
1211b408
13a1801
1477544
155aa25
hex46988

289160 has 16 divisors (see below), whose sum is σ = 650700. Its totient is φ = 115648.

The previous prime is 289151. The next prime is 289169. The reversal of 289160 is 61982.

It is an interprime number because it is at equal distance from previous prime (289151) and next prime (289169).

It can be written as a sum of positive squares in 2 ways, for example, as 264196 + 24964 = 514^2 + 158^2 .

It is a super-2 number, since 2×2891602 = 167227011200, which contains 22 as substring.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (289169) by changing a digit.

289160 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 3 ways as a sum of consecutive naturals, for example, 3575 + ... + 3654.

2289160 is an apocalyptic number.

289160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

289160 is an abundant number, since it is smaller than the sum of its proper divisors (361540).

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

289160 is a wasteful number, since it uses less digits than its factorization.

289160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7240 (or 7236 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 289160 is about 537.7359947037. The cubic root of 289160 is about 66.1270890668.

The spelling of 289160 in words is "two hundred eighty-nine thousand, one hundred sixty".

Divisors: 1 2 4 5 8 10 20 40 7229 14458 28916 36145 57832 72290 144580 289160