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489538080 = 253751399
BaseRepresentation
bin11101001011011…
…100001000100000
31021010011010000000
4131023130020200
52000310204310
6120324300000
715063001503
oct3513341040
91233133000
10489538080
11231371229
12117b41600
137a561205
144903113a
152ce9d4c0
hex1d2dc220

489538080 has 192 divisors, whose sum is σ = 1735776000. Its totient is φ = 130450176.

The previous prime is 489538057. The next prime is 489538099. The reversal of 489538080 is 80835984.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 349221 + ... + 350619.

It is an arithmetic number, because the mean of its divisors is an integer number (9040500).

Almost surely, 2489538080 is an apocalyptic number.

489538080 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 489538080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (867888000).

489538080 is an abundant number, since it is smaller than the sum of its proper divisors (1246237920).

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

489538080 is an equidigital number, since it uses as much as digits as its factorization.

489538080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1435 (or 1409 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The square root of 489538080 is about 22125.5074518077. The cubic root of 489538080 is about 788.1257067957.

The spelling of 489538080 in words is "four hundred eighty-nine million, five hundred thirty-eight thousand, eighty".