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30475654868 = 2253143753089
BaseRepresentation
bin11100011000011111…
…011001011011010100
32220122220022200012002
4130120133121123110
5444403231423433
622000023014432
72126133535511
oct343037313324
986586280162
1030475654868
1111a1979262a
125aa629a418
132b48aa5099
1416916a4308
15bd57839e8
hex7187d96d4

30475654868 has 12 divisors (see below), whose sum is σ = 54338668020. Its totient is φ = 14950321152.

The previous prime is 30475654823. The next prime is 30475654889. The reversal of 30475654868 is 86845657403.

It can be written as a sum of positive squares in 2 ways, for example, as 8576982544 + 21898672324 = 92612^2 + 147982^2 .

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 71876333 + ... + 71876756.

It is an arithmetic number, because the mean of its divisors is an integer number (4528222335).

Almost surely, 230475654868 is an apocalyptic number.

It is an amenable number.

30475654868 is a deficient number, since it is larger than the sum of its proper divisors (23863013152).

30475654868 is a wasteful number, since it uses less digits than its factorization.

30475654868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143753146 (or 143753144 counting only the distinct ones).

The product of its (nonzero) digits is 19353600, while the sum is 56.

The spelling of 30475654868 in words is "thirty billion, four hundred seventy-five million, six hundred fifty-four thousand, eight hundred sixty-eight".

Divisors: 1 2 4 53 106 212 143753089 287506178 575012356 7618913717 15237827434 30475654868