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487109880 = 233254728789
BaseRepresentation
bin11101000010001…
…011010011111000
31020221120202010200
4131002023103320
51444200004010
6120200242200
715033236265
oct3502132370
91227522120
10487109880
1122aa62954
12117170360
1379bc0bca
144899c26c
152cb6dcc0
hex1d08b4f8

487109880 has 96 divisors (see below), whose sum is σ = 1616846400. Its totient is φ = 127127808.

The previous prime is 487109879. The next prime is 487109881. The reversal of 487109880 is 88901784.

487109880 is a `hidden beast` number, since 487 + 1 + 0 + 98 + 80 = 666.

It is an interprime number because it is at equal distance from previous prime (487109879) and next prime (487109881).

It is a super-2 number, since 2×4871098802 = 474552070387228800, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (487109881) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2526 + ... + 31314.

It is an arithmetic number, because the mean of its divisors is an integer number (16842150).

Almost surely, 2487109880 is an apocalyptic number.

487109880 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 487109880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (808423200).

487109880 is an abundant number, since it is smaller than the sum of its proper divisors (1129736520).

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

487109880 is a wasteful number, since it uses less digits than its factorization.

487109880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28853 (or 28846 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The square root of 487109880 is about 22070.5659193415. The cubic root of 487109880 is about 786.8204629240.

The spelling of 487109880 in words is "four hundred eighty-seven million, one hundred nine thousand, eight hundred eighty".

Divisors: 1 2 3 4 5 6 8 9 10 12 15 18 20 24 30 36 40 45 47 60 72 90 94 120 141 180 188 235 282 360 376 423 470 564 705 846 940 1128 1410 1692 1880 2115 2820 3384 4230 5640 8460 16920 28789 57578 86367 115156 143945 172734 230312 259101 287890 345468 431835 518202 575780 690936 863670 1036404 1151560 1295505 1353083 1727340 2072808 2591010 2706166 3454680 4059249 5182020 5412332 6765415 8118498 10364040 10824664 12177747 13530830 16236996 20296245 24355494 27061660 32473992 40592490 48710988 54123320 60888735 81184980 97421976 121777470 162369960 243554940 487109880