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30208392286 = 2103227646003
BaseRepresentation
bin11100001000100011…
…110111110001011110
32212222021102022211221
4130020203313301132
5443331322023121
621513314403554
72116410045352
oct341043676136
985867368757
1030208392286
11118a1939266
125a308905ba
132b055ca247
141667db3462
15bbc08eb41
hex7088f7c5e

30208392286 has 16 divisors (see below), whose sum is σ = 45954140544. Its totient is φ = 14891638104.

The previous prime is 30208392283. The next prime is 30208392299. The reversal of 30208392286 is 68229380203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30208392281) 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 7 ways as a sum of consecutive naturals, for example, 276240 + ... + 369763.

It is an arithmetic number, because the mean of its divisors is an integer number (2872133784).

Almost surely, 230208392286 is an apocalyptic number.

30208392286 is a deficient number, since it is larger than the sum of its proper divisors (15745748258).

30208392286 is a wasteful number, since it uses less digits than its factorization.

30208392286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646335.

The product of its (nonzero) digits is 248832, while the sum is 43.

The spelling of 30208392286 in words is "thirty billion, two hundred eight million, three hundred ninety-two thousand, two hundred eighty-six".

Divisors: 1 2 103 206 227 454 23381 46762 646003 1292006 66538309 133076618 146642681 293285362 15104196143 30208392286