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489463880 = 23544927253
BaseRepresentation
bin11101001011001…
…010000001001000
31021010000100012212
4131023022001020
52000300321010
6120322524252
715062242253
oct3513120110
91233010185
10489463880
11231320504
12117b06688
137a5364c9
144901209a
152ce86505
hex1d2ca048

489463880 has 32 divisors (see below), whose sum is σ = 1103787000. Its totient is φ = 195342336.

The previous prime is 489463879. The next prime is 489463889. The reversal of 489463880 is 88364984.

It can be written as a sum of positive squares in 4 ways, for example, as 415262884 + 74200996 = 20378^2 + 8614^2 .

It is not an unprimeable number, because it can be changed into a prime (489463889) 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 7 ways as a sum of consecutive naturals, for example, 4334 + ... + 31586.

Almost surely, 2489463880 is an apocalyptic number.

489463880 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

489463880 is an abundant number, since it is smaller than the sum of its proper divisors (614323120).

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

489463880 is a wasteful number, since it uses less digits than its factorization.

489463880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27713 (or 27709 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 50.

The square root of 489463880 is about 22123.8305905646. The cubic root of 489463880 is about 788.0858856632.

The spelling of 489463880 in words is "four hundred eighty-nine million, four hundred sixty-three thousand, eight hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 449 898 1796 2245 3592 4490 8980 17960 27253 54506 109012 136265 218024 272530 545060 1090120 12236597 24473194 48946388 61182985 97892776 122365970 244731940 489463880