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489008520 = 23325711132359
BaseRepresentation
bin11101001001011…
…010110110001000
31021002011012120200
4131021122312020
52000141233040
6120305052200
715055334550
oct3511326610
91232135520
10489008520
1123103a380
12117927060
137a407170
1448d34160
152cde6630
hex1d25ad88

489008520 has 768 divisors, whose sum is σ = 2264371200. Its totient is φ = 88197120.

The previous prime is 489008483. The next prime is 489008537. The reversal of 489008520 is 25800984.

489008520 is a `hidden beast` number, since 48 + 90 + 0 + 8 + 520 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 8288251 + ... + 8288309.

It is an arithmetic number, because the mean of its divisors is an integer number (2948400).

Almost surely, 2489008520 is an apocalyptic number.

489008520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 489008520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1132185600).

489008520 is an abundant number, since it is smaller than the sum of its proper divisors (1775362680).

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

489008520 is a wasteful number, since it uses less digits than its factorization.

489008520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130 (or 123 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 489008520 is about 22113.5370305159. The cubic root of 489008520 is about 787.8414180955.

The spelling of 489008520 in words is "four hundred eighty-nine million, eight thousand, five hundred twenty".