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27908833147 = 137130237089
BaseRepresentation
bin11001111111011111…
…101111111101111011
32200001000101121201221
4121333133233331323
5424124130130042
620453211052511
72005415111326
oct317737577573
980030347657
1027908833147
1110921899468
1254aa741137
13282a07a970
1414ca81b7bd
15ad5258d67
hex67f7eff7b

27908833147 has 8 divisors (see below), whose sum is σ = 30478986720. Its totient is φ = 25399153920.

The previous prime is 27908833123. The next prime is 27908833163. The reversal of 27908833147 is 74133880972.

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

It is a cyclic number.

It is not a de Polignac number, because 27908833147 - 27 = 27908833019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27908833094 and 27908833103.

It is not an unprimeable number, because it can be changed into a prime (27908833177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15117622 + ... + 15119467.

It is an arithmetic number, because the mean of its divisors is an integer number (3809873340).

Almost surely, 227908833147 is an apocalyptic number.

27908833147 is a deficient number, since it is larger than the sum of its proper divisors (2570153573).

27908833147 is a wasteful number, since it uses less digits than its factorization.

27908833147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30237173.

The product of its (nonzero) digits is 2032128, while the sum is 52.

The spelling of 27908833147 in words is "twenty-seven billion, nine hundred eight million, eight hundred thirty-three thousand, one hundred forty-seven".

Divisors: 1 13 71 923 30237089 393082157 2146833319 27908833147