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489412280 = 235712713763
BaseRepresentation
bin11101001010111…
…101011010111000
31021002220201102202
4131022331122320
52000242143110
6120321445332
715061635650
oct3512753270
91232821382
10489412280
11231295765
12117aa0848
137a518b86
1448ddb360
152ce760a5
hex1d2bd6b8

489412280 has 64 divisors (see below), whose sum is σ = 1268490240. Its totient is φ = 166465152.

The previous prime is 489412277. The next prime is 489412321. The reversal of 489412280 is 82214984.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28679 + ... + 42441.

It is an arithmetic number, because the mean of its divisors is an integer number (19820160).

Almost surely, 2489412280 is an apocalyptic number.

489412280 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 489412280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (634245120).

489412280 is an abundant number, since it is smaller than the sum of its proper divisors (779077960).

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

489412280 is a wasteful number, since it uses less digits than its factorization.

489412280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13908 (or 13904 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 38.

The square root of 489412280 is about 22122.6643964962. The cubic root of 489412280 is about 788.0581909667.

The spelling of 489412280 in words is "four hundred eighty-nine million, four hundred twelve thousand, two hundred eighty".

Divisors: 1 2 4 5 7 8 10 14 20 28 35 40 56 70 127 140 254 280 508 635 889 1016 1270 1778 2540 3556 4445 5080 7112 8890 13763 17780 27526 35560 55052 68815 96341 110104 137630 192682 275260 385364 481705 550520 770728 963410 1747901 1926820 3495802 3853640 6991604 8739505 12235307 13983208 17479010 24470614 34958020 48941228 61176535 69916040 97882456 122353070 244706140 489412280