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489872 = 24171801
BaseRepresentation
bin1110111100110010000
3220212222102
41313212100
5111133442
614255532
74110125
oct1674620
9825872
10489872
11305059
121b75a8
13141c86
14ca74c
159a232
hex77990

489872 has 20 divisors (see below), whose sum is σ = 1005516. Its totient is φ = 230400.

The previous prime is 489871. The next prime is 489887. The reversal of 489872 is 278984.

It can be written as a sum of positive squares in 2 ways, for example, as 215296 + 274576 = 464^2 + 524^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 629 + ... + 1172.

2489872 is an apocalyptic number.

It is an amenable number.

489872 is an abundant number, since it is smaller than the sum of its proper divisors (515644).

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

489872 is a wasteful number, since it uses less digits than its factorization.

489872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1826 (or 1820 counting only the distinct ones).

The product of its digits is 32256, while the sum is 38.

The square root of 489872 is about 699.9085654569. The cubic root of 489872 is about 78.8304862842.

The spelling of 489872 in words is "four hundred eighty-nine thousand, eight hundred seventy-two".

Divisors: 1 2 4 8 16 17 34 68 136 272 1801 3602 7204 14408 28816 30617 61234 122468 244936 489872