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489787984 = 2474373107
BaseRepresentation
bin11101001100011…
…001001001010000
31021010121210210201
4131030121021100
52000341203414
6120333504544
715065062210
oct3514311120
91233553721
10489787984
11231521a64
12118042154
137a61ab9a
1449098240
152ceec574
hex1d319250

489787984 has 20 divisors (see below), whose sum is σ = 1084530784. Its totient is φ = 209909088.

The previous prime is 489787973. The next prime is 489787993.

489787984 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2186442 + ... + 2186665.

Almost surely, 2489787984 is an apocalyptic number.

It is an amenable number.

489787984 is an abundant number, since it is smaller than the sum of its proper divisors (594742800).

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

489787984 is a wasteful number, since it uses less digits than its factorization.

489787984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4373122 (or 4373116 counting only the distinct ones).

The product of its digits is 32514048, while the sum is 64.

The square root of 489787984 is about 22131.1541497501. The cubic root of 489787984 is about 788.2597939209.

The spelling of 489787984 in words is "four hundred eighty-nine million, seven hundred eighty-seven thousand, nine hundred eighty-four".

Divisors: 1 2 4 7 8 14 16 28 56 112 4373107 8746214 17492428 30611749 34984856 61223498 69969712 122446996 244893992 489787984