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487261280 = 255112511103
BaseRepresentation
bin11101000010110…
…000010001100000
31020221212102211002
4131002300101200
51444214330110
6120203411132
715034436552
oct3502602140
91227772732
10487261280
11230056680
12117223aa8
1379c44aac
14489db4d2
152cb9daa5
hex1d0b0460

487261280 has 96 divisors (see below), whose sum is σ = 1261951488. Its totient is φ = 176320000.

The previous prime is 487261249. The next prime is 487261301. The reversal of 487261280 is 82162784.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 441209 + ... + 442311.

It is an arithmetic number, because the mean of its divisors is an integer number (13145328).

Almost surely, 2487261280 is an apocalyptic number.

487261280 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 487261280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (630975744).

487261280 is an abundant number, since it is smaller than the sum of its proper divisors (774690208).

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

487261280 is a wasteful number, since it uses less digits than its factorization.

487261280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1380 (or 1372 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 38.

The square root of 487261280 is about 22073.9955603873. The cubic root of 487261280 is about 786.9019724446.

The spelling of 487261280 in words is "four hundred eighty-seven million, two hundred sixty-one thousand, two hundred eighty".

Divisors: 1 2 4 5 8 10 11 16 20 22 32 40 44 55 80 88 110 160 176 220 251 352 440 502 880 1004 1103 1255 1760 2008 2206 2510 2761 4016 4412 5020 5515 5522 8032 8824 10040 11030 11044 12133 13805 17648 20080 22060 22088 24266 27610 35296 40160 44120 44176 48532 55220 60665 88240 88352 97064 110440 121330 176480 194128 220880 242660 276853 388256 441760 485320 553706 970640 1107412 1384265 1941280 2214824 2768530 3045383 4429648 5537060 6090766 8859296 11074120 12181532 15226915 22148240 24363064 30453830 44296480 48726128 60907660 97452256 121815320 243630640 487261280