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78000528088 = 23721947222823
BaseRepresentation
bin100100010100100110…
…0011001101011011000
321110022222202101011201
41020221030121223120
52234221113344323
655455530003544
75430632356300
oct1105114315330
9243288671151
1078000528088
11300972a025a
121314a2765b4
137480b13c42
143abd3ba600
152067bb28ad
hex1229319ad8

78000528088 has 96 divisors (see below), whose sum is σ = 182893939200. Its totient is φ = 30995431488.

The previous prime is 78000528043. The next prime is 78000528121. The reversal of 78000528088 is 88082500087.

It is a super-4 number, since 4×780005280884 (a number of 45 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 238645 + ... + 461467.

It is an arithmetic number, because the mean of its divisors is an integer number (1905145200).

Almost surely, 278000528088 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 78000528088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91446969600).

78000528088 is an abundant number, since it is smaller than the sum of its proper divisors (104893411112).

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

78000528088 is a wasteful number, since it uses less digits than its factorization.

78000528088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222909 (or 222898 counting only the distinct ones).

The product of its (nonzero) digits is 286720, while the sum is 46.

The spelling of 78000528088 in words is "seventy-eight billion, five hundred twenty-eight thousand, eighty-eight".

Divisors: 1 2 4 7 8 14 19 28 38 47 49 56 76 94 98 133 152 188 196 266 329 376 392 532 658 893 931 1064 1316 1786 1862 2303 2632 3572 3724 4606 6251 7144 7448 9212 12502 18424 25004 43757 50008 87514 175028 222823 350056 445646 891292 1559761 1782584 3119522 4233637 6239044 8467274 10472681 10918327 12478088 16934548 20945362 21836654 29635459 33869096 41890724 43673308 59270918 73308767 83781448 87346616 118541836 146617534 198980939 207448213 237083672 293235068 397961878 414896426 513161369 586470136 795923756 829792852 1026322738 1392866573 1591847512 1659585704 2052645476 2785733146 4105290952 5571466292 9750066011 11142932584 19500132022 39000264044 78000528088