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489156 = 22340763
BaseRepresentation
bin1110111011011000100
3220211222220
41313123010
5111123111
614252340
74105053
oct1673304
9824886
10489156
11304568
121b70b0
13141855
14ca39a
1599e06
hex776c4

489156 has 12 divisors (see below), whose sum is σ = 1141392. Its totient is φ = 163048.

The previous prime is 489133. The next prime is 489157. The reversal of 489156 is 651984.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (489157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20370 + ... + 20393.

It is an arithmetic number, because the mean of its divisors is an integer number (95116).

2489156 is an apocalyptic number.

It is an amenable number.

489156 is an abundant number, since it is smaller than the sum of its proper divisors (652236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

489156 is a wasteful number, since it uses less digits than its factorization.

489156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40770 (or 40768 counting only the distinct ones).

The product of its digits is 8640, while the sum is 33.

The square root of 489156 is about 699.3968830357. The cubic root of 489156 is about 78.7920611790.

The spelling of 489156 in words is "four hundred eighty-nine thousand, one hundred fifty-six".

Divisors: 1 2 3 4 6 12 40763 81526 122289 163052 244578 489156