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71928607908 = 22373163750159
BaseRepresentation
bin100001011111101000…
…1110111010010100100
320212122211100212120010
41002333101313102210
52134302210423113
653013223410220
75124313036143
oct1027721672244
9225584325503
1071928607908
1128560907803
1211b348b3970
136a23b86671
1436a4c0975a
151d0eac01c3
hex10bf4774a4

71928607908 has 48 divisors (see below), whose sum is σ = 170239829760. Its totient is φ = 23632844544.

The previous prime is 71928607901. The next prime is 71928607913. The reversal of 71928607908 is 80970682917.

It is not an unprimeable number, because it can be changed into a prime (71928607901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1408933 + ... + 1459091.

It is an arithmetic number, because the mean of its divisors is an integer number (3546663120).

Almost surely, 271928607908 is an apocalyptic number.

It is an amenable number.

71928607908 is an abundant number, since it is smaller than the sum of its proper divisors (98311221852).

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

71928607908 is a wasteful number, since it uses less digits than its factorization.

71928607908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51876 (or 51874 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 57.

The spelling of 71928607908 in words is "seventy-one billion, nine hundred twenty-eight million, six hundred seven thousand, nine hundred eight".

Divisors: 1 2 3 4 6 12 73 146 219 292 438 876 1637 3274 4911 6548 9822 19644 50159 100318 119501 150477 200636 239002 300954 358503 478004 601908 717006 1434012 3661607 7323214 10984821 14646428 21969642 43939284 82110283 164220566 246330849 328441132 492661698 985323396 5994050659 11988101318 17982151977 23976202636 35964303954 71928607908