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78088084830 = 2345779174331
BaseRepresentation
bin100100010111001101…
…0011001110101011110
321110120002111201110000
41020232122121311132
52234411022203310
655512334355130
75433044524620
oct1105632316536
9243502451400
1078088084830
11301317629a8
121317365baa6
137495cbba72
143acac8cc10
15207070a4c0
hex122e699d5e

78088084830 has 160 divisors (see below), whose sum is σ = 243004861440. Its totient is φ = 17622671040.

The previous prime is 78088084807. The next prime is 78088084831. The reversal of 78088084830 is 3848088087.

78088084830 is a `hidden beast` number, since 7 + 80 + 8 + 80 + 8 + 483 + 0 = 666.

It is a super-3 number, since 3×780880848303 (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78088084831) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 360765 + ... + 535095.

It is an arithmetic number, because the mean of its divisors is an integer number (1518780384).

Almost surely, 278088084830 is an apocalyptic number.

78088084830 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 78088084830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121502430720).

78088084830 is an abundant number, since it is smaller than the sum of its proper divisors (164916776610).

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

78088084830 is a wasteful number, since it uses less digits than its factorization.

78088084830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174436 (or 174427 counting only the distinct ones).

The product of its (nonzero) digits is 2752512, while the sum is 54.

The spelling of 78088084830 in words is "seventy-eight billion, eighty-eight million, eighty-four thousand, eight hundred thirty".

Divisors: 1 2 3 5 6 7 9 10 14 15 18 21 27 30 35 42 45 54 63 70 79 81 90 105 126 135 158 162 189 210 237 270 315 378 395 405 474 553 567 630 711 790 810 945 1106 1134 1185 1422 1659 1890 2133 2370 2765 2835 3318 3555 4266 4977 5530 5670 6399 7110 8295 9954 10665 12798 14931 16590 21330 24885 29862 31995 44793 49770 63990 74655 89586 149310 174331 223965 348662 447930 522993 871655 1045986 1220317 1568979 1743310 2440634 2614965 3137958 3660951 4706937 5229930 6101585 7321902 7844895 9413874 10982853 12203170 13772149 14120811 15689790 18304755 21965706 23534685 27544298 28241622 32948559 36609510 41316447 47069370 54914265 65897118 68860745 70604055 82632894 96405043 98845677 109828530 123949341 137721490 141208110 164742795 192810086 197691354 206582235 247898682 289215129 329485590 371848023 413164470 482025215 494228385 578430258 619746705 743696046 867645387 964050430 988456770 1115544069 1239493410 1446075645 1735290774 1859240115 2231088138 2602936161 2892151290 3718480230 4338226935 5205872322 5577720345 7808808483 8676453870 11155440690 13014680805 15617616966 26029361610 39044042415 78088084830