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2689105 = 54711443
BaseRepresentation
bin1010010000100001010001
312001121202111
422100201101
51142022410
6133345321
731566646
oct12204121
95047674
102689105
111577401
12a98241
13731cb3
144dddcd
15381b8a
hex290851

2689105 has 8 divisors (see below), whose sum is σ = 3295872. Its totient is φ = 2105328.

The previous prime is 2689103. The next prime is 2689109. The reversal of 2689105 is 5019862.

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

It is a cyclic number.

It is not a de Polignac number, because 2689105 - 21 = 2689103 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2689103) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 5487 + ... + 5956.

It is an arithmetic number, because the mean of its divisors is an integer number (411984).

22689105 is an apocalyptic number.

It is an amenable number.

2689105 is a deficient number, since it is larger than the sum of its proper divisors (606767).

2689105 is a wasteful number, since it uses less digits than its factorization.

2689105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11495.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 2689105 is about 1639.8490784215. The cubic root of 2689105 is about 139.0601158115.

The spelling of 2689105 in words is "two million, six hundred eighty-nine thousand, one hundred five".

Divisors: 1 5 47 235 11443 57215 537821 2689105