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489528871 = 13293128519
BaseRepresentation
bin11101001011011…
…001111000100111
31021010010122100221
4131023121320213
52000304410441
6120324145211
715062632606
oct3513317047
91233118327
10489528871
11231365317
12117b38207
137a559c70
144902ba3d
152ce9a8d1
hex1d2d9e27

489528871 has 8 divisors (see below), whose sum is σ = 528988320. Its totient is φ = 450327072.

The previous prime is 489528869. The next prime is 489528877. The reversal of 489528871 is 178825984.

It is a happy number.

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

It is not a de Polignac number, because 489528871 - 21 = 489528869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489528877) 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 7 ways as a sum of consecutive naturals, for example, 60451 + ... + 68068.

It is an arithmetic number, because the mean of its divisors is an integer number (66123540).

Almost surely, 2489528871 is an apocalyptic number.

489528871 is a deficient number, since it is larger than the sum of its proper divisors (39459449).

489528871 is a wasteful number, since it uses less digits than its factorization.

489528871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128825.

The product of its digits is 1290240, while the sum is 52.

The square root of 489528871 is about 22125.2993426078. The cubic root of 489528871 is about 788.1207647933.

The spelling of 489528871 in words is "four hundred eighty-nine million, five hundred twenty-eight thousand, eight hundred seventy-one".

Divisors: 1 13 293 3809 128519 1670747 37656067 489528871