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47942975 = 5217112807
BaseRepresentation
bin1011011011100…
…0110100111111
310100012202101202
42312320310333
544233133400
64431330115
71121336303
oct266706477
9110182352
1047942975
11250762a3
121408093b
139c18032
14651dd03
1543204d5
hex2db8d3f

47942975 has 12 divisors (see below), whose sum is σ = 62946864. Its totient is φ = 36097920.

The previous prime is 47942927. The next prime is 47943001. The reversal of 47942975 is 57924974.

It is not a de Polignac number, because 47942975 - 210 = 47941951 is a prime.

It is a Duffinian number.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 55979 + ... + 56828.

It is an arithmetic number, because the mean of its divisors is an integer number (5245572).

Almost surely, 247942975 is an apocalyptic number.

47942975 is a deficient number, since it is larger than the sum of its proper divisors (15003889).

47942975 is a wasteful number, since it uses less digits than its factorization.

47942975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112834 (or 112829 counting only the distinct ones).

The product of its digits is 635040, while the sum is 47.

The square root of 47942975 is about 6924.0865823587. The cubic root of 47942975 is about 363.2801430613.

The spelling of 47942975 in words is "forty-seven million, nine hundred forty-two thousand, nine hundred seventy-five".

Divisors: 1 5 17 25 85 425 112807 564035 1917719 2820175 9588595 47942975