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30687840286 = 232094781527
BaseRepresentation
bin11100100101001000…
…110100100000011110
32221012200120210212021
4130211020310200132
51000322041342121
622033042530354
72134321224055
oct344510644036
987180523767
1030687840286
1112018538684
125b453669ba
132b80a3789c
1416b193939c
15be91e8641
hex72523481e

30687840286 has 8 divisors (see below), whose sum is σ = 46046114640. Its totient is φ = 15339135408.

The previous prime is 30687840257. The next prime is 30687840301. The reversal of 30687840286 is 68204878603.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×306878402863 (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2384346 + ... + 2397181.

It is an arithmetic number, because the mean of its divisors is an integer number (5755764330).

Almost surely, 230687840286 is an apocalyptic number.

30687840286 is a deficient number, since it is larger than the sum of its proper divisors (15358274354).

30687840286 is a wasteful number, since it uses less digits than its factorization.

30687840286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4784738.

The product of its (nonzero) digits is 3096576, while the sum is 52.

The spelling of 30687840286 in words is "thirty billion, six hundred eighty-seven million, eight hundred forty thousand, two hundred eighty-six".

Divisors: 1 2 3209 6418 4781527 9563054 15343920143 30687840286