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489481480 = 23512237037
BaseRepresentation
bin11101001011001…
…110010100001000
31021010001020100201
4131023032110020
52000301401410
6120323141544
715062344465
oct3513162410
91233036321
10489481480
11231332754
12117b148b4
137a541517
144901866c
152ce8b83a
hex1d2ce508

489481480 has 16 divisors (see below), whose sum is σ = 1101333420. Its totient is φ = 195792576.

The previous prime is 489481471. The next prime is 489481481. The reversal of 489481480 is 84184984.

It can be written as a sum of positive squares in 2 ways, for example, as 489382884 + 98596 = 22122^2 + 314^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 489481480.

It is not an unprimeable number, because it can be changed into a prime (489481481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6118479 + ... + 6118558.

Almost surely, 2489481480 is an apocalyptic number.

489481480 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

489481480 is an abundant number, since it is smaller than the sum of its proper divisors (611851940).

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

489481480 is a wasteful number, since it uses less digits than its factorization.

489481480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12237048 (or 12237044 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 46.

The square root of 489481480 is about 22124.2283481255. The cubic root of 489481480 is about 788.0953314711.

The spelling of 489481480 in words is "four hundred eighty-nine million, four hundred eighty-one thousand, four hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 12237037 24474074 48948148 61185185 97896296 122370370 244740740 489481480