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289730 = 2574139
BaseRepresentation
bin1000110101111000010
3112201102202
41012233002
533232410
610113202
72314460
oct1065702
9481382
10289730
11188751
1211b802
13a1b4c
1477830
155aca5
hex46bc2

289730 has 16 divisors (see below), whose sum is σ = 596160. Its totient is φ = 99312.

The previous prime is 289727. The next prime is 289733. The reversal of 289730 is 37982.

289730 = T189 + T190 + ... + T203.

289730 is nontrivially palindromic in base 15.

It is an interprime number because it is at equal distance from previous prime (289727) and next prime (289733).

It is a junction number, because it is equal to n+sod(n) for n = 289693 and 289702.

It is not an unprimeable number, because it can be changed into a prime (289733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2000 + ... + 2139.

It is an arithmetic number, because the mean of its divisors is an integer number (37260).

2289730 is an apocalyptic number.

289730 is an abundant number, since it is smaller than the sum of its proper divisors (306430).

It is a weird number, because it is abundant, but not a pseudoperfect number.

289730 is a wasteful number, since it uses less digits than its factorization.

289730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4153.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 289730 is about 538.2657336298. The cubic root of 289730 is about 66.1705110489.

The spelling of 289730 in words is "two hundred eighty-nine thousand, seven hundred thirty".

Divisors: 1 2 5 7 10 14 35 70 4139 8278 20695 28973 41390 57946 144865 289730