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87790530230 = 251313716330241
BaseRepresentation
bin101000111000010111…
…0010010111010110110
322101121021101000101122
41101300232102322312
52414243333431410
6104155211423542
76225350123504
oct1216056227266
9271537330348
1087790530230
1134260513817
1215020a54bb2
138381156510
14436b6b7674
15243c3dde55
hex1470b92eb6

87790530230 has 64 divisors (see below), whose sum is σ = 172478109888. Its totient is φ = 31979888640.

The previous prime is 87790530143. The next prime is 87790530239. The reversal of 87790530230 is 3203509778.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87790530239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2887910 + ... + 2918150.

It is an arithmetic number, because the mean of its divisors is an integer number (2694970467).

Almost surely, 287790530230 is an apocalyptic number.

87790530230 is a deficient number, since it is larger than the sum of its proper divisors (84687579658).

87790530230 is a wasteful number, since it uses less digits than its factorization.

87790530230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30561.

The product of its (nonzero) digits is 317520, while the sum is 44.

The spelling of 87790530230 in words is "eighty-seven billion, seven hundred ninety million, five hundred thirty thousand, two hundred thirty".

Divisors: 1 2 5 10 13 26 65 130 137 163 274 326 685 815 1370 1630 1781 2119 3562 4238 8905 10595 17810 21190 22331 30241 44662 60482 111655 151205 223310 290303 302410 393133 580606 786266 1451515 1965665 2903030 3931330 4143017 4929283 8286034 9858566 20715085 24646415 41430170 49292830 53859221 64080679 107718442 128161358 269296105 320403395 538592210 640806790 675311771 1350623542 3376558855 6753117710 8779053023 17558106046 43895265115 87790530230