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289084971 = 3713765951
BaseRepresentation
bin10001001110110…
…001011000101011
3202010222001000210
4101032301120223
51043001204341
644404032203
710110116220
oct2116613053
9663861023
10289084971
111391a98aa
1280992663
1347b788c6
142a571947
151a5a4c16
hex113b162b

289084971 has 8 divisors (see below), whose sum is σ = 440510464. Its totient is φ = 165191400.

The previous prime is 289084931. The next prime is 289084987. The reversal of 289084971 is 179480982.

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

It is not a de Polignac number, because 289084971 - 210 = 289083947 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 289084971.

It is not an unprimeable number, because it can be changed into a prime (289084931) 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, 6882955 + ... + 6882996.

It is an arithmetic number, because the mean of its divisors is an integer number (55063808).

Almost surely, 2289084971 is an apocalyptic number.

289084971 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

289084971 is a deficient number, since it is larger than the sum of its proper divisors (151425493).

289084971 is a wasteful number, since it uses less digits than its factorization.

289084971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13765961.

The product of its (nonzero) digits is 290304, while the sum is 48.

The square root of 289084971 is about 17002.4989633877. The cubic root of 289084971 is about 661.2136919016.

The spelling of 289084971 in words is "two hundred eighty-nine million, eighty-four thousand, nine hundred seventy-one".

Divisors: 1 3 7 21 13765951 41297853 96361657 289084971