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82070656280 = 235971271511103
BaseRepresentation
bin100110001101111001…
…0101101010100011000
321211211122102022102022
41030123302231110120
52321040042000110
6101411442554012
75633534032244
oct1143362552430
9254748368368
1082070656280
1131895822868
1213aa5368908
13797c11a612
143d87b87424
15220518b755
hex131bcad518

82070656280 has 128 divisors (see below), whose sum is σ = 189448519680. Its totient is φ = 31991500800.

The previous prime is 82070656267. The next prime is 82070656289. The reversal of 82070656280 is 8265607028.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82070656289) 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, 74406209 + ... + 74407311.

It is an arithmetic number, because the mean of its divisors is an integer number (1480066560).

Almost surely, 282070656280 is an apocalyptic number.

It is an amenable number.

82070656280 is an abundant number, since it is smaller than the sum of its proper divisors (107377863400).

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

82070656280 is a wasteful number, since it uses less digits than its factorization.

82070656280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1489 (or 1485 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 44.

The spelling of 82070656280 in words is "eighty-two billion, seventy million, six hundred fifty-six thousand, two hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 97 127 151 194 254 302 388 485 508 604 635 755 776 970 1016 1103 1208 1270 1510 1940 2206 2540 3020 3880 4412 5080 5515 6040 8824 11030 12319 14647 19177 22060 24638 29294 38354 44120 49276 58588 61595 73235 76708 95885 98552 106991 117176 123190 140081 146470 153416 166553 191770 213982 246380 280162 292940 333106 383540 427964 492760 534955 560324 585880 666212 700405 767080 832765 855928 1069910 1120648 1332424 1400810 1665530 1860169 2139820 2801620 3331060 3720338 4279640 5603240 6662120 7440676 9300845 13587857 14881352 16155641 18601690 21152231 27175714 32311282 37203380 42304462 54351428 64622564 67939285 74406760 80778205 84608924 105761155 108702856 129245128 135878570 161556410 169217848 211522310 271757140 323112820 423044620 543514280 646225640 846089240 2051766407 4103532814 8207065628 10258832035 16414131256 20517664070 41035328140 82070656280