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421287750 = 23353134801
BaseRepresentation
bin11001000111000…
…101011101000110
31002100201122011000
4121013011131012
51330322202000
6105445354130
713303613112
oct3107053506
91070648130
10421287750
111a68957a4
12b9108946
1369385bc0
143dd46742
1526ebb000
hex191c5746

421287750 has 128 divisors (see below), whose sum is σ = 1258508160. Its totient is φ = 103680000.

The previous prime is 421287749. The next prime is 421287767. The reversal of 421287750 is 57782124.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 85350 + ... + 90150.

It is an arithmetic number, because the mean of its divisors is an integer number (9832095).

Almost surely, 2421287750 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421287750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (629254080).

421287750 is an abundant number, since it is smaller than the sum of its proper divisors (837220410).

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

421287750 is a wasteful number, since it uses less digits than its factorization.

421287750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4840 (or 4824 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 36.

The square root of 421287750 is about 20525.2953693729. The cubic root of 421287750 is about 749.6518384030.

The spelling of 421287750 in words is "four hundred twenty-one million, two hundred eighty-seven thousand, seven hundred fifty".

Divisors: 1 2 3 5 6 9 10 13 15 18 25 26 27 30 39 45 50 54 65 75 78 90 117 125 130 135 150 195 225 234 250 270 325 351 375 390 450 585 650 675 702 750 975 1125 1170 1350 1625 1755 1950 2250 2925 3250 3375 3510 4801 4875 5850 6750 8775 9602 9750 14403 14625 17550 24005 28806 29250 43209 43875 48010 62413 72015 86418 87750 120025 124826 129627 144030 187239 216045 240050 259254 312065 360075 374478 432090 561717 600125 624130 648135 720150 936195 1080225 1123434 1200250 1296270 1560325 1685151 1800375 1872390 2160450 2808585 3120650 3240675 3370302 3600750 4680975 5401125 5617170 6481350 7801625 8425755 9361950 10802250 14042925 15603250 16203375 16851510 23404875 28085850 32406750 42128775 46809750 70214625 84257550 140429250 210643875 421287750