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200008145 = 51710721991
BaseRepresentation
bin10111110101111…
…10000111010001
3111221100110121002
423322332013101
5402200230040
631502511345
74646020061
oct1372760721
9457313532
10200008145
11a2999097
1256b95555
133258ac1c
141c7c53a1
151285ba15
hexbebe1d1

200008145 has 16 divisors (see below), whose sum is σ = 256514688. Its totient is φ = 149180160.

The previous prime is 200008121. The next prime is 200008147. The reversal of 200008145 is 541800002.

It is not a de Polignac number, because 200008145 - 210 = 200007121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200008147) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1901 + ... + 20090.

It is an arithmetic number, because the mean of its divisors is an integer number (16032168).

Almost surely, 2200008145 is an apocalyptic number.

It is an amenable number.

200008145 is a deficient number, since it is larger than the sum of its proper divisors (56506543).

200008145 is a wasteful number, since it uses less digits than its factorization.

200008145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22120.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 200008145 is about 14142.4235900358. The cubic root of 200008145 is about 584.8114862430.

Adding to 200008145 its reverse (541800002), we get a palindrome (741808147).

The spelling of 200008145 in words is "two hundred million, eight thousand, one hundred forty-five".

Divisors: 1 5 17 85 107 535 1819 9095 21991 109955 373847 1869235 2353037 11765185 40001629 200008145