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80884488860 = 22573159315881
BaseRepresentation
bin100101101010100010…
…1110101101010011100
321201202222102202121122
41023111011311222130
52311122412120420
6101054031150112
75562251545220
oct1132505655234
9251688382548
1080884488860
113133720470a
1213814075338
13782045a2c6
143cb4418780
152185e84725
hex12d5175a9c

80884488860 has 96 divisors (see below), whose sum is σ = 203781795840. Its totient is φ = 26382297600.

The previous prime is 80884488827. The next prime is 80884488869. The reversal of 80884488860 is 6888448808.

It is a Harshad number since it is a multiple of its sum of digits (62).

It is a junction number, because it is equal to n+sod(n) for n = 80884488793 and 80884488802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80884488869) 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 31 ways as a sum of consecutive naturals, for example, 98120 + ... + 414000.

It is an arithmetic number, because the mean of its divisors is an integer number (2122727040).

Almost surely, 280884488860 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 80884488860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101890897920).

80884488860 is an abundant number, since it is smaller than the sum of its proper divisors (122897306980).

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

80884488860 is a wasteful number, since it uses less digits than its factorization.

80884488860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315987 (or 315985 counting only the distinct ones).

The product of its (nonzero) digits is 25165824, while the sum is 62.

The spelling of 80884488860 in words is "eighty billion, eight hundred eighty-four million, four hundred eighty-eight thousand, eight hundred sixty".

Divisors: 1 2 4 5 7 10 14 20 28 31 35 59 62 70 118 124 140 155 217 236 295 310 413 434 590 620 826 868 1085 1180 1652 1829 2065 2170 3658 4130 4340 7316 8260 9145 12803 18290 25606 36580 51212 64015 128030 256060 315881 631762 1263524 1579405 2211167 3158810 4422334 6317620 8844668 9792311 11055835 18636979 19584622 22111670 37273958 39169244 44223340 48961555 68546177 74547916 93184895 97923110 130458853 137092354 186369790 195846220 260917706 274184708 342730885 372739580 521835412 577746349 652294265 685461770 1155492698 1304588530 1370923540 2310985396 2609177060 2888731745 4044224443 5777463490 8088448886 11554926980 16176897772 20221122215 40442244430 80884488860