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87942307776 = 26317412572557
BaseRepresentation
bin101000111100111000…
…1010001111111000000
322101222211222010001020
41101321301101333000
52420101212322101
6104222232505440
76232202165601
oct1217161217700
9271884863036
1087942307776
113432915a504
121506384b280
1383a672850b
144383905da8
15244a8c0136
hex1479c51fc0

87942307776 has 224 divisors, whose sum is σ = 253457854272. Its totient is φ = 26801602560.

The previous prime is 87942307711. The next prime is 87942307781. The reversal of 87942307776 is 67770324978.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34391490 + ... + 34394046.

It is an arithmetic number, because the mean of its divisors is an integer number (1131508278).

Almost surely, 287942307776 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87942307776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126728927136).

87942307776 is an abundant number, since it is smaller than the sum of its proper divisors (165515546496).

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

87942307776 is a wasteful number, since it uses less digits than its factorization.

87942307776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2887 (or 2877 counting only the distinct ones).

The product of its (nonzero) digits is 24893568, while the sum is 60.

The spelling of 87942307776 in words is "eighty-seven billion, nine hundred forty-two million, three hundred seven thousand, seven hundred seventy-six".