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87770000680 = 23519115486843
BaseRepresentation
bin101000110111101111…
…1111110110100101000
322101112211202000010221
41101233133332310220
52414223110010210
6104153155415424
76225010460545
oct1215737766450
9271484660127
1087770000680
113424a97164a
1215015bb4574
138379b1905b
144368a91bcc
15243a6d61da
hex146f7fed28

87770000680 has 32 divisors (see below), whose sum is σ = 207876319200. Its totient is φ = 33260210496.

The previous prime is 87770000671. The next prime is 87770000753. The reversal of 87770000680 is 8600007778.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57742662 + ... + 57744181.

It is an arithmetic number, because the mean of its divisors is an integer number (6496134975).

Almost surely, 287770000680 is an apocalyptic number.

It is an amenable number.

87770000680 is an abundant number, since it is smaller than the sum of its proper divisors (120106318520).

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

87770000680 is a wasteful number, since it uses less digits than its factorization.

87770000680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115486873 (or 115486869 counting only the distinct ones).

The product of its (nonzero) digits is 131712, while the sum is 43.

The spelling of 87770000680 in words is "eighty-seven billion, seven hundred seventy million, six hundred eighty", and thus it is an aban number.

Divisors: 1 2 4 5 8 10 19 20 38 40 76 95 152 190 380 760 115486843 230973686 461947372 577434215 923894744 1154868430 2194250017 2309736860 4388500034 4619473720 8777000068 10971250085 17554000136 21942500170 43885000340 87770000680