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163000047 = 377761907
BaseRepresentation
bin10011011011100…
…10111011101111
3102100201021000210
421231302323233
5313212000142
624101353503
74016322540
oct1155627357
9370637023
10163000047
1184011391
1246708893
1327a01142
14179104c7
15e49b49c
hex9b72eef

163000047 has 8 divisors (see below), whose sum is σ = 248381056. Its totient is φ = 93142872.

The previous prime is 163000037. The next prime is 163000073. The reversal of 163000047 is 740000361.

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

It is not a de Polignac number, because 163000047 - 211 = 162997999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 7761907 = 163000047 / (1 + 6 + 3 + 0 + 0 + 0 + 0 + 4 + 7).

It is a junction number, because it is equal to n+sod(n) for n = 162999987 and 163000032.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163000007) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3880933 + ... + 3880974.

It is an arithmetic number, because the mean of its divisors is an integer number (31047632).

Almost surely, 2163000047 is an apocalyptic number.

163000047 is a deficient number, since it is larger than the sum of its proper divisors (85381009).

163000047 is an equidigital number, since it uses as much as digits as its factorization.

163000047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7761917.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 163000047 is about 12767.1471754656. The cubic root of 163000047 is about 546.2556096312.

The spelling of 163000047 in words is "one hundred sixty-three million, forty-seven", and thus it is an aban number.

Divisors: 1 3 7 21 7761907 23285721 54333349 163000047