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387814071 = 32914929917
BaseRepresentation
bin10111000111011…
…001001010110111
31000000201222220010
4113013121022313
51243240022241
6102252111303
712416236161
oct2707311267
91000658803
10387814071
11189a024a7
12a9a65533
1362465aa8
1439711931
15240a7d16
hex171d92b7

387814071 has 16 divisors (see below), whose sum is σ = 538524000. Its totient is φ = 247943808.

The previous prime is 387814069. The next prime is 387814087. The reversal of 387814071 is 170418783.

It is not a de Polignac number, because 387814071 - 21 = 387814069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387814571) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1996 + ... + 27921.

It is an arithmetic number, because the mean of its divisors is an integer number (33657750).

Almost surely, 2387814071 is an apocalyptic number.

387814071 is a deficient number, since it is larger than the sum of its proper divisors (150709929).

387814071 is a wasteful number, since it uses less digits than its factorization.

387814071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30098.

The product of its (nonzero) digits is 37632, while the sum is 39.

The square root of 387814071 is about 19692.9954806271. The cubic root of 387814071 is about 729.2467811069.

The spelling of 387814071 in words is "three hundred eighty-seven million, eight hundred fourteen thousand, seventy-one".

Divisors: 1 3 29 87 149 447 4321 12963 29917 89751 867593 2602779 4457633 13372899 129271357 387814071