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489792880 = 2456122411
BaseRepresentation
bin11101001100011…
…010010101110000
31021010122001112001
4131030122111300
52000341333010
6120333543344
715065112403
oct3514322560
91233561461
10489792880
11231525705
12118044b54
137a620195
1449099d3a
152ceedc3a
hex1d31a570

489792880 has 20 divisors (see below), whose sum is σ = 1138768632. Its totient is φ = 195917120.

The previous prime is 489792841. The next prime is 489792881. The reversal of 489792880 is 88297984.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489792881) 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, 3061126 + ... + 3061285.

Almost surely, 2489792880 is an apocalyptic number.

489792880 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

489792880 is an abundant number, since it is smaller than the sum of its proper divisors (648975752).

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

489792880 is a wasteful number, since it uses less digits than its factorization.

489792880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6122424 (or 6122418 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 55.

The square root of 489792880 is about 22131.2647627740. The cubic root of 489792880 is about 788.2624204363.

The spelling of 489792880 in words is "four hundred eighty-nine million, seven hundred ninety-two thousand, eight hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 40 80 6122411 12244822 24489644 30612055 48979288 61224110 97958576 122448220 244896440 489792880