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214972560 = 243251127143
BaseRepresentation
bin11001101000000…
…11100010010000
3112222111201220200
430310003202100
5420013110220
633155335200
75220144105
oct1464034220
9488451820
10214972560
1110038a080
125bbb1500
13356ca2ca
142079caac
1513d15890
hexcd03890

214972560 has 120 divisors (see below), whose sum is σ = 787610304. Its totient is φ = 52112640.

The previous prime is 214972547. The next prime is 214972561. The reversal of 214972560 is 65279412.

214972560 is a `hidden beast` number, since 2 + 1 + 4 + 97 + 2 + 560 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (214972561) 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, 5652 + ... + 21491.

Almost surely, 2214972560 is an apocalyptic number.

214972560 is a gapful number since it is divisible by the number (20) 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 214972560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (393805152).

214972560 is an abundant number, since it is smaller than the sum of its proper divisors (572637744).

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

214972560 is a wasteful number, since it uses less digits than its factorization.

214972560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27173 (or 27164 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 214972560 is about 14661.9425725243. The cubic root of 214972560 is about 599.0471542761.

The spelling of 214972560 in words is "two hundred fourteen million, nine hundred seventy-two thousand, five hundred sixty".

Divisors: 1 2 3 4 5 6 8 9 10 11 12 15 16 18 20 22 24 30 33 36 40 44 45 48 55 60 66 72 80 88 90 99 110 120 132 144 165 176 180 198 220 240 264 330 360 396 440 495 528 660 720 792 880 990 1320 1584 1980 2640 3960 7920 27143 54286 81429 108572 135715 162858 217144 244287 271430 298573 325716 407145 434288 488574 542860 597146 651432 814290 895719 977148 1085720 1194292 1221435 1302864 1492865 1628580 1791438 1954296 2171440 2388584 2442870 2687157 2985730 3257160 3582876 3908592 4478595 4777168 4885740 5374314 5971460 6514320 7165752 8957190 9771480 10748628 11942920 13435785 14331504 17914380 19542960 21497256 23885840 26871570 35828760 42994512 53743140 71657520 107486280 214972560