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71382288482 = 2172111132
BaseRepresentation
bin100001001111010110…
…1110100100001100010
320211020202100222012022
41002132231310201202
52132142331212412
652443110101442
75104630304141
oct1023655644142
9224222328168
1071382288482
112830049394a
1211a0194a882
13696793452b
143652437758
151ccbb57a72
hex109eb74862

71382288482 has 18 divisors (see below), whose sum is σ = 113752602243. Its totient is φ = 33588642432.

The previous prime is 71382288479. The next prime is 71382288487. The reversal of 71382288482 is 28488228317.

It can be written as a sum of positive squares in 5 ways, for example, as 8977752001 + 62404536481 = 94751^2 + 249809^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=188921.

It is a super-2 number, since 2×713822884822 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71382288487) 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 8 ways as a sum of consecutive naturals, for example, 6417758 + ... + 6428870.

Almost surely, 271382288482 is an apocalyptic number.

71382288482 is a deficient number, since it is larger than the sum of its proper divisors (42370313761).

71382288482 is an frugal number, since it uses more digits than its factorization.

71382288482 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22262 (or 11132 counting only the distinct ones).

The product of its digits is 2752512, while the sum is 53.

The spelling of 71382288482 in words is "seventy-one billion, three hundred eighty-two million, two hundred eighty-eight thousand, four hundred eighty-two".

Divisors: 1 2 17 34 289 578 11113 22226 188921 377842 3211657 6423314 123498769 246997538 2099479073 4198958146 35691144241 71382288482