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2680205 = 51148731
BaseRepresentation
bin1010001110010110001101
312001011112212
422032112031
51141231310
6133240205
731532003
oct12162615
95034485
102680205
111570750
12a93065
1372ac28
144daa73
1537e205
hex28e58d

2680205 has 8 divisors (see below), whose sum is σ = 3508704. Its totient is φ = 1949200.

The previous prime is 2680141. The next prime is 2680231. The reversal of 2680205 is 5020862.

It is a happy number.

2680205 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2680205 - 26 = 2680141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24311 + ... + 24420.

It is an arithmetic number, because the mean of its divisors is an integer number (438588).

22680205 is an apocalyptic number.

It is an amenable number.

2680205 is a deficient number, since it is larger than the sum of its proper divisors (828499).

2680205 is a wasteful number, since it uses less digits than its factorization.

2680205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48747.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 2680205 is about 1637.1331650174. The cubic root of 2680205 is about 138.9065327511.

The spelling of 2680205 in words is "two million, six hundred eighty thousand, two hundred five".

Divisors: 1 5 11 55 48731 243655 536041 2680205