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2007109 = 13181853
BaseRepresentation
bin111101010000001000101
310202222020101
413222001011
51003211414
6111004101
723026426
oct7520105
93688211
102007109
111150a75
12809631
13553750
143a364d
15299a74
hex1ea045

2007109 has 8 divisors (see below), whose sum is σ = 2175992. Its totient is φ = 1840320.

The previous prime is 2007107. The next prime is 2007133. The reversal of 2007109 is 9017002.

It can be written as a sum of positive squares in 4 ways, for example, as 324900 + 1682209 = 570^2 + 1297^2 .

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 2007109 - 21 = 2007107 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2007107) 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, 1927 + ... + 2779.

It is an arithmetic number, because the mean of its divisors is an integer number (271999).

22007109 is an apocalyptic number.

It is an amenable number.

2007109 is a deficient number, since it is larger than the sum of its proper divisors (168883).

2007109 is a wasteful number, since it uses less digits than its factorization.

2007109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1047.

The product of its (nonzero) digits is 126, while the sum is 19.

The square root of 2007109 is about 1416.7247439076. The cubic root of 2007109 is about 126.1412081122.

It can be divided in two parts, 2007 and 109, that added together give a square (2116 = 462).

The spelling of 2007109 in words is "two million, seven thousand, one hundred nine".

Divisors: 1 13 181 853 2353 11089 154393 2007109