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82987992292 = 22191647766271
BaseRepresentation
bin100110101001001111…
…0000100010011100100
321221012120112210212011
41031102132010103210
52324424411223132
6102042452404004
75665343203252
oct1152236042344
9257176483764
1082987992292
11322166159a7
1214100616604
137a971a39aa
1440339375d2
15225a98eb47
hex13527844e4

82987992292 has 24 divisors (see below), whose sum is σ = 152884202240. Its totient is φ = 39307122720.

The previous prime is 82987992277. The next prime is 82987992299. The reversal of 82987992292 is 29229978928.

It is not an unprimeable number, because it can be changed into a prime (82987992299) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1219117 + ... + 1285387.

Almost surely, 282987992292 is an apocalyptic number.

It is an amenable number.

82987992292 is a deficient number, since it is larger than the sum of its proper divisors (69896209948).

82987992292 is a wasteful number, since it uses less digits than its factorization.

82987992292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82771 (or 82769 counting only the distinct ones).

The product of its digits is 47029248, while the sum is 67.

The spelling of 82987992292 in words is "eighty-two billion, nine hundred eighty-seven million, nine hundred ninety-two thousand, two hundred ninety-two".

Divisors: 1 2 4 19 38 76 16477 32954 65908 66271 132542 265084 313063 626126 1252252 1259149 2518298 5036596 1091947267 2183894534 4367789068 20746998073 41493996146 82987992292