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30540632186 = 2193187252181
BaseRepresentation
bin11100011100010111…
…010001000001111010
32220211102120212022102
4130130113101001322
51000021400212221
622010303423402
72130553042661
oct343427210172
986742525272
1030540632186
1111a52432a99
125b03bb4b62
132b593a56bc
14169a179dd8
15bdb31b30b
hex71c5d107a

30540632186 has 16 divisors (see below), whose sum is σ = 48237372960. Its totient is φ = 14462018640.

The previous prime is 30540632149. The next prime is 30540632231. The reversal of 30540632186 is 68123604503.

It is a Harshad number since it is a multiple of its sum of digits (38).

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 7 ways as a sum of consecutive naturals, for example, 4985 + ... + 247196.

It is an arithmetic number, because the mean of its divisors is an integer number (3014835810).

Almost surely, 230540632186 is an apocalyptic number.

30540632186 is a deficient number, since it is larger than the sum of its proper divisors (17696740774).

30540632186 is a wasteful number, since it uses less digits than its factorization.

30540632186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255389.

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 30540632186 in words is "thirty billion, five hundred forty million, six hundred thirty-two thousand, one hundred eighty-six".

Divisors: 1 2 19 38 3187 6374 60553 121106 252181 504362 4791439 9582878 803700847 1607401694 15270316093 30540632186