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289103689 = 7127325201
BaseRepresentation
bin10001001110110…
…101111101001001
3202010222222201001
4101032311331021
51043002304224
644404255001
710110224620
oct2116657511
9663888631
10289103689
11139211976
12809a1461
1347b84294
142a5786b7
151a5aa544
hex113b5f49

289103689 has 8 divisors (see below), whose sum is σ = 333006848. Its totient is φ = 245851200.

The previous prime is 289103687. The next prime is 289103699. The reversal of 289103689 is 986301982.

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

It is not a de Polignac number, because 289103689 - 21 = 289103687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (289103687) 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, 161712 + ... + 163489.

It is an arithmetic number, because the mean of its divisors is an integer number (41625856).

Almost surely, 2289103689 is an apocalyptic number.

It is an amenable number.

289103689 is a deficient number, since it is larger than the sum of its proper divisors (43903159).

289103689 is a wasteful number, since it uses less digits than its factorization.

289103689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325335.

The product of its (nonzero) digits is 186624, while the sum is 46.

The square root of 289103689 is about 17003.0494029747. The cubic root of 289103689 is about 661.2279625971.

The spelling of 289103689 in words is "two hundred eighty-nine million, one hundred three thousand, six hundred eighty-nine".

Divisors: 1 7 127 889 325201 2276407 41300527 289103689