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80704680 = 23357293313
BaseRepresentation
bin1001100111101…
…11010010101000
312121212020000020
410303313102220
5131130022210
612001440440
71666656420
oct463672250
9177766006
1080704680
1141612691
1223040120
1313949064
14aa0b480
157142770
hex4cf74a8

80704680 has 128 divisors (see below), whose sum is σ = 286329600. Its totient is φ = 17805312.

The previous prime is 80704669. The next prime is 80704681. The reversal of 80704680 is 8640708.

It is not an unprimeable number, because it can be changed into a prime (80704681) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22704 + ... + 26016.

It is an arithmetic number, because the mean of its divisors is an integer number (2236950).

Almost surely, 280704680 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 80704680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143164800).

80704680 is an abundant number, since it is smaller than the sum of its proper divisors (205624920).

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

80704680 is a wasteful number, since it uses less digits than its factorization.

80704680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3363 (or 3359 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 80704680 is about 8983.5783516369. The cubic root of 80704680 is about 432.1483972346.

The spelling of 80704680 in words is "eighty million, seven hundred four thousand, six hundred eighty".

Divisors: 1 2 3 4 5 6 7 8 10 12 14 15 20 21 24 28 29 30 35 40 42 56 58 60 70 84 87 105 116 120 140 145 168 174 203 210 232 280 290 348 406 420 435 580 609 696 812 840 870 1015 1160 1218 1624 1740 2030 2436 3045 3313 3480 4060 4872 6090 6626 8120 9939 12180 13252 16565 19878 23191 24360 26504 33130 39756 46382 49695 66260 69573 79512 92764 96077 99390 115955 132520 139146 185528 192154 198780 231910 278292 288231 347865 384308 397560 463820 480385 556584 576462 672539 695730 768616 927640 960770 1152924 1345078 1391460 1441155 1921540 2017617 2305848 2690156 2782920 2882310 3362695 3843080 4035234 5380312 5764620 6725390 8070468 10088085 11529240 13450780 16140936 20176170 26901560 40352340 80704680