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2005102132 = 221129742709
BaseRepresentation
bin111011110000011…
…0110111000110100
312011201221202000221
41313200312320310
513101301232012
6530544144124
7100455041545
oct16740667064
95151852027
102005102132
11939911a00
1247b608044
1325c542787
141504264cc
15bb06e507
hex77836e34

2005102132 has 36 divisors (see below), whose sum is σ = 3896774980. Its totient is φ = 901992960.

The previous prime is 2005102117. The next prime is 2005102139. The reversal of 2005102132 is 2312015002.

It can be written as a sum of positive squares in 2 ways, for example, as 676208016 + 1328894116 = 26004^2 + 36454^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2005102139) 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 11 ways as a sum of consecutive naturals, for example, 25594 + ... + 68302.

Almost surely, 22005102132 is an apocalyptic number.

2005102132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2005102132 is a deficient number, since it is larger than the sum of its proper divisors (1891672848).

2005102132 is a wasteful number, since it uses less digits than its factorization.

2005102132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42832 (or 42819 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 2005102132 is about 44778.3667857594. The cubic root of 2005102132 is about 1260.9915207140.

Adding to 2005102132 its reverse (2312015002), we get a palindrome (4317117134).

The spelling of 2005102132 in words is "two billion, five million, one hundred two thousand, one hundred thirty-two".

Divisors: 1 2 4 11 22 44 97 121 194 242 388 484 1067 2134 4268 11737 23474 42709 46948 85418 170836 469799 939598 1879196 4142773 5167789 8285546 10335578 16571092 20671156 45570503 91141006 182282012 501275533 1002551066 2005102132