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71316430388 = 2272547015371
BaseRepresentation
bin100001001101011001…
…0100101111000110100
320211002011110000212122
41002122302211320310
52132024001233023
652432354335112
75103200441060
oct1023262457064
9224064400778
1071316430388
11282772a1775
12119a388a498
1369570b6048
1436477b2aa0
151cc5e992c8
hex109aca5e34

71316430388 has 12 divisors (see below), whose sum is σ = 142632860832. Its totient is φ = 30564184440.

The previous prime is 71316430387. The next prime is 71316430399. The reversal of 71316430388 is 88303461317.

71316430388 is an admirable number.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71316430387) 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 3 ways as a sum of consecutive naturals, for example, 1273507658 + ... + 1273507713.

It is an arithmetic number, because the mean of its divisors is an integer number (11886071736).

Almost surely, 271316430388 is an apocalyptic number.

It is an amenable number.

71316430388 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71316430388 is a wasteful number, since it uses less digits than its factorization.

71316430388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2547015382 (or 2547015380 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 44.

The spelling of 71316430388 in words is "seventy-one billion, three hundred sixteen million, four hundred thirty thousand, three hundred eighty-eight".

Divisors: 1 2 4 7 14 28 2547015371 5094030742 10188061484 17829107597 35658215194 71316430388