Search a number
-
+
71200050205 = 529491034829
BaseRepresentation
bin100001001001111011…
…0101000110000011101
320210210001110022021111
41002103312220300131
52131304203101310
652413040102021
75100255304204
oct1022366506035
9223701408244
1071200050205
11282176325a9
1211970904911
136938c5892b
14363615a23b
151cbab5b28a
hex1093da8c1d

71200050205 has 8 divisors (see below), whose sum is σ = 88386269400. Its totient is φ = 54995900736.

The previous prime is 71200050179. The next prime is 71200050217. The reversal of 71200050205 is 50205000217.

It can be written as a sum of positive squares in 4 ways, for example, as 2221331161 + 68978719044 = 47131^2 + 262638^2 .

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 71200050205 - 233 = 62610115613 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245517270 + ... + 245517559.

It is an arithmetic number, because the mean of its divisors is an integer number (11048283675).

Almost surely, 271200050205 is an apocalyptic number.

It is an amenable number.

71200050205 is a deficient number, since it is larger than the sum of its proper divisors (17186219195).

71200050205 is a wasteful number, since it uses less digits than its factorization.

71200050205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491034863.

The product of its (nonzero) digits is 700, while the sum is 22.

The spelling of 71200050205 in words is "seventy-one billion, two hundred million, fifty thousand, two hundred five".

Divisors: 1 5 29 145 491034829 2455174145 14240010041 71200050205