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201008005 = 51111713121
BaseRepresentation
bin10111111101100…
…10001110000101
3112000020021010221
423332302032011
5402424224010
631540144341
74660353112
oct1376621605
9460207127
10201008005
11a3511320
12573980b1
133284b063
141c9a5909
15129a7dda
hexbfb2385

201008005 has 16 divisors (see below), whose sum is σ = 263446848. Its totient is φ = 146016000.

The previous prime is 201007997. The next prime is 201008021. The reversal of 201008005 is 500800102.

It is a happy number.

It is not a de Polignac number, because 201008005 - 23 = 201007997 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201008005.

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, 62845 + ... + 65965.

It is an arithmetic number, because the mean of its divisors is an integer number (16465428).

Almost surely, 2201008005 is an apocalyptic number.

It is an amenable number.

201008005 is a deficient number, since it is larger than the sum of its proper divisors (62438843).

201008005 is a wasteful number, since it uses less digits than its factorization.

201008005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4308.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 201008005 is about 14177.7291905298. The cubic root of 201008005 is about 585.7843765162.

Adding to 201008005 its reverse (500800102), we get a palindrome (701808107).

It can be divided in two parts, 20 and 1008005, that multiplied together give a square (20160100 = 44902).

The spelling of 201008005 in words is "two hundred one million, eight thousand, five".

Divisors: 1 5 11 55 1171 3121 5855 12881 15605 34331 64405 171655 3654691 18273455 40201601 201008005