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87282312005 = 5719443296279
BaseRepresentation
bin101000101001001101…
…1100110001101000101
322100021212001212001102
41101102123212031011
52412223232441010
6104032534505445
76206636260640
oct1212233461505
9270255055042
1087282312005
113401a653959
1214aba805285
1382cca84885
14431ddc2a57
15240c9a0ba5
hex14526e6345

87282312005 has 32 divisors (see below), whose sum is σ = 126286387200. Its totient is φ = 56572506432.

The previous prime is 87282311993. The next prime is 87282312023. The reversal of 87282312005 is 50021328278.

It is a cyclic number.

It is not a de Polignac number, because 87282312005 - 28 = 87282311749 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 87282312005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 146456 + ... + 442734.

It is an arithmetic number, because the mean of its divisors is an integer number (3946449600).

Almost surely, 287282312005 is an apocalyptic number.

It is an amenable number.

87282312005 is a deficient number, since it is larger than the sum of its proper divisors (39004075195).

87282312005 is a wasteful number, since it uses less digits than its factorization.

87282312005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296753.

The product of its (nonzero) digits is 53760, while the sum is 38.

The spelling of 87282312005 in words is "eighty-seven billion, two hundred eighty-two million, three hundred twelve thousand, five".

Divisors: 1 5 7 19 35 95 133 443 665 2215 3101 8417 15505 42085 58919 294595 296279 1481395 2073953 5629301 10369765 28146505 39405107 131251597 197025535 656257985 918761179 2493780343 4593805895 12468901715 17456462401 87282312005