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70866285 = 3571729372
BaseRepresentation
bin1000011100101…
…01010101101101
311221100101021020
410032111111231
5121120210120
611010524353
71520232150
oct416252555
9157311236
1070866285
1137002986
121b8966b9
13118b2c19
1495a9c97
15634c640
hex439556d

70866285 has 96 divisors (see below), whose sum is σ = 145877760. Its totient is φ = 28643328.

The previous prime is 70866277. The next prime is 70866287. The reversal of 70866285 is 58266807.

It is not a de Polignac number, because 70866285 - 23 = 70866277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70866287) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1915287 + ... + 1915323.

It is an arithmetic number, because the mean of its divisors is an integer number (1519560).

Almost surely, 270866285 is an apocalyptic number.

It is an amenable number.

70866285 is an abundant number, since it is smaller than the sum of its proper divisors (75011475).

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

70866285 is a wasteful number, since it uses less digits than its factorization.

70866285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135 (or 98 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 70866285 is about 8418.2115083906. The cubic root of 70866285 is about 413.8216634873.

The spelling of 70866285 in words is "seventy million, eight hundred sixty-six thousand, two hundred eighty-five".

Divisors: 1 3 5 7 15 17 21 29 35 37 51 85 87 105 111 119 145 185 203 255 259 357 435 493 555 595 609 629 777 1015 1073 1295 1369 1479 1785 1887 2465 3045 3145 3219 3451 3885 4107 4403 5365 6845 7395 7511 9435 9583 10353 13209 16095 17255 18241 20535 22015 22533 23273 28749 37555 39701 47915 51765 54723 66045 69819 91205 112665 116365 119103 127687 143745 162911 198505 273615 277907 349095 383061 488733 595515 638435 674917 814555 833721 1389535 1915305 2024751 2443665 3374585 4168605 4724419 10123755 14173257 23622095 70866285