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12715342780 = 2257178960029
BaseRepresentation
bin10111101011110010…
…01011101110111100
31012211011011100011111
423311321023232330
5202020111432110
65501421531404
7630045426130
oct136571135674
935734140144
1012715342780
115435530258
12256a413b64
13127841658a
14888a2b3c0
154e6473e8a
hex2f5e4bbbc

12715342780 has 96 divisors (see below), whose sum is σ = 32675529600. Its totient is φ = 4056932352.

The previous prime is 12715342771. The next prime is 12715342799. The reversal of 12715342780 is 8724351721.

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, 181806 + ... + 241834.

It is an arithmetic number, because the mean of its divisors is an integer number (340370100).

Almost surely, 212715342780 is an apocalyptic number.

12715342780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12715342780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16337764800).

12715342780 is an abundant number, since it is smaller than the sum of its proper divisors (19960186820).

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

12715342780 is a wasteful number, since it uses less digits than its factorization.

12715342780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60151 (or 60149 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 40.

The spelling of 12715342780 in words is "twelve billion, seven hundred fifteen million, three hundred forty-two thousand, seven hundred eighty".

Divisors: 1 2 4 5 7 10 14 17 20 28 34 35 68 70 85 89 119 140 170 178 238 340 356 445 476 595 623 890 1190 1246 1513 1780 2380 2492 3026 3115 6052 6230 7565 10591 12460 15130 21182 30260 42364 52955 60029 105910 120058 211820 240116 300145 420203 600290 840406 1020493 1200580 1680812 2040986 2101015 4081972 4202030 5102465 5342581 7143451 8404060 10204930 10685162 14286902 20409860 21370324 26712905 28573804 35717255 37398067 53425810 71434510 74796134 90823877 106851620 142869020 149592268 181647754 186990335 363295508 373980670 454119385 635767139 747961340 908238770 1271534278 1816477540 2543068556 3178835695 6357671390 12715342780