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87065388102 = 23711247364513
BaseRepresentation
bin101000100010110000…
…0000110010001000110
322022201201212222101210
41101011200012101012
52411302214404402
6103555225232250
76201363405510
oct1210540062106
9268651788353
1087065388102
1133a19161800
1214a5a032686
138296b53334
1442dd276bb0
1523e890206c
hex1445806446

87065388102 has 96 divisors (see below), whose sum is σ = 223397508096. Its totient is φ = 22133168640.

The previous prime is 87065388079. The next prime is 87065388119. The reversal of 87065388102 is 20188356078.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 56598 + ... + 421110.

It is an arithmetic number, because the mean of its divisors is an integer number (2327057376).

Almost surely, 287065388102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87065388102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111698754048).

87065388102 is an abundant number, since it is smaller than the sum of its proper divisors (136332119994).

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

87065388102 is a wasteful number, since it uses less digits than its factorization.

87065388102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364594 (or 364583 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 48.

The spelling of 87065388102 in words is "eighty-seven billion, sixty-five million, three hundred eighty-eight thousand, one hundred two".

Divisors: 1 2 3 6 7 11 14 21 22 33 42 47 66 77 94 121 141 154 231 242 282 329 363 462 517 658 726 847 987 1034 1551 1694 1974 2541 3102 3619 5082 5687 7238 10857 11374 17061 21714 34122 39809 79618 119427 238854 364513 729026 1093539 2187078 2551591 4009643 5103182 7654773 8019286 12028929 15309546 17132111 24057858 28067501 34264222 44106073 51396333 56135002 84202503 88212146 102792666 119924777 132318219 168405006 188453221 239849554 264636438 308742511 359774331 376906442 565359663 617485022 719548662 926227533 1130719326 1319172547 1852455066 2072985431 2638345094 3957517641 4145970862 6218956293 7915035282 12437912586 14510898017 29021796034 43532694051 87065388102