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2183005 = 511192089
BaseRepresentation
bin1000010100111101011101
311002220112001
420110331131
51024324010
6114442301
724361306
oct10247535
94086461
102183005
111261140
12893391
135b5826
1440b7ad
152d1c3a
hex214f5d

2183005 has 16 divisors (see below), whose sum is σ = 3009600. Its totient is φ = 1503360.

The previous prime is 2182997. The next prime is 2183029. The reversal of 2183005 is 5003812.

It is a happy number.

2183005 is a nontrivial binomial coefficient, being equal to C(2090, 2).

It is not a de Polignac number, because 2183005 - 23 = 2182997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

2183005 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1 + ... + 2089.

It is an arithmetic number, because the mean of its divisors is an integer number (188100).

22183005 is an apocalyptic number.

2183005 is the 2089-th triangular number and also the 1045-th hexagonal number.

2183005 is the 697-th centered nonagonal number.

It is an amenable number.

2183005 is a deficient number, since it is larger than the sum of its proper divisors (826595).

2183005 is a wasteful number, since it uses less digits than its factorization.

2183005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2124.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 2183005 is about 1477.4995769881. The cubic root of 2183005 is about 129.7233762940.

Adding to 2183005 its reverse (5003812), we get a palindrome (7186817).

It can be divided in two parts, 218 and 3005, that added together give a palindrome (3223).

The spelling of 2183005 in words is "two million, one hundred eighty-three thousand, five".

Divisors: 1 5 11 19 55 95 209 1045 2089 10445 22979 39691 114895 198455 436601 2183005