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2105413205 = 57311940473
BaseRepresentation
bin111110101111110…
…0000111001010101
312102201201001221212
41331133200321111
513302441210310
6544530151205
7103113500630
oct17537407125
95381631855
102105413205
119904a6115
124a9122505
13277264a3c
1415d898c17
15c4c86205
hex7d7e0e55

2105413205 has 16 divisors (see below), whose sum is σ = 2980568064. Its totient is φ = 1397139840.

The previous prime is 2105413201. The next prime is 2105413241. The reversal of 2105413205 is 5023145012.

It is not a de Polignac number, because 2105413205 - 22 = 2105413201 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2105413201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 969152 + ... + 971321.

It is an arithmetic number, because the mean of its divisors is an integer number (186285504).

Almost surely, 22105413205 is an apocalyptic number.

It is an amenable number.

2105413205 is a deficient number, since it is larger than the sum of its proper divisors (875154859).

2105413205 is a wasteful number, since it uses less digits than its factorization.

2105413205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1940516.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 2105413205 is about 45884.7818454006. The cubic root of 2105413205 is about 1281.6785443173.

Adding to 2105413205 its reverse (5023145012), we get a palindrome (7128558217).

The spelling of 2105413205 in words is "two billion, one hundred five million, four hundred thirteen thousand, two hundred five".

Divisors: 1 5 7 31 35 155 217 1085 1940473 9702365 13583311 60154663 67916555 300773315 421082641 2105413205