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490271680 = 26523292297
BaseRepresentation
bin11101001110001…
…111001111000000
31021011112101022101
4131032033033000
52001002143210
6120352120144
715102145333
oct3516171700
91234471271
10490271680
11231822408
12118236054
137a75a0b2
144918261a
152d095a3a
hex1d38f3c0

490271680 has 112 divisors (see below), whose sum is σ = 1260774720. Its totient is φ = 181035008.

The previous prime is 490271671. The next prime is 490271693. The reversal of 490271680 is 86172094.

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, 212292 + ... + 214588.

Almost surely, 2490271680 is an apocalyptic number.

490271680 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 490271680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (630387360).

490271680 is an abundant number, since it is smaller than the sum of its proper divisors (770503040).

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

490271680 is a wasteful number, since it uses less digits than its factorization.

490271680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2366 (or 2356 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 490271680 is about 22142.0793964795. The cubic root of 490271680 is about 788.5191936875.

The spelling of 490271680 in words is "four hundred ninety million, two hundred seventy-one thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 23 29 32 40 46 58 64 80 92 115 116 145 160 184 230 232 290 320 368 460 464 580 667 736 920 928 1160 1334 1472 1840 1856 2297 2320 2668 3335 3680 4594 4640 5336 6670 7360 9188 9280 10672 11485 13340 18376 21344 22970 26680 36752 42688 45940 52831 53360 66613 73504 91880 105662 106720 133226 147008 183760 211324 213440 264155 266452 333065 367520 422648 528310 532904 666130 735040 845296 1056620 1065808 1332260 1532099 1690592 2113240 2131616 2664520 3064198 3381184 4226480 4263232 5329040 6128396 7660495 8452960 10658080 12256792 15320990 16905920 21316160 24513584 30641980 49027168 61283960 98054336 122567920 245135840 490271680