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289140271 = 7193376451
BaseRepresentation
bin10001001110111…
…110111000101111
3202011001211212221
4101032332320233
51043004442041
644405140211
710110436360
oct2116767057
9664054787
10289140271
11139237402
12809ba667
1347b97b24
142a587b67
151a5b62d1
hex113bee2f

289140271 has 16 divisors (see below), whose sum is σ = 348924160. Its totient is φ = 234057600.

The previous prime is 289140253. The next prime is 289140307. The reversal of 289140271 is 172041982.

It is not a de Polignac number, because 289140271 - 215 = 289107503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289141271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41596 + ... + 48046.

It is an arithmetic number, because the mean of its divisors is an integer number (21807760).

Almost surely, 2289140271 is an apocalyptic number.

289140271 is a deficient number, since it is larger than the sum of its proper divisors (59783889).

289140271 is a wasteful number, since it uses less digits than its factorization.

289140271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6814.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 289140271 is about 17004.1251171591. The cubic root of 289140271 is about 661.2558511161.

The spelling of 289140271 in words is "two hundred eighty-nine million, one hundred forty thousand, two hundred seventy-one".

Divisors: 1 7 19 133 337 2359 6403 6451 44821 45157 122569 857983 2173987 15217909 41305753 289140271