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215083008 = 2113271667
BaseRepresentation
bin11001101000111…
…10100000000000
3112222201100102100
430310132200000
5420030124013
633201550400
75221114110
oct1464364000
9488640370
10215083008
11100455058
1260045400
133573866a
14207cb040
1513d38473
hexcd1e800

215083008 has 144 divisors (see below), whose sum is σ = 710367840. Its totient is φ = 61415424.

The previous prime is 215082979. The next prime is 215083019. The reversal of 215083008 is 800380512.

It is a happy number.

215083008 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (144).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 128191 + ... + 129857.

It is an arithmetic number, because the mean of its divisors is an integer number (4933110).

Almost surely, 2215083008 is an apocalyptic number.

215083008 is a gapful number since it is divisible by the number (28) 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 215083008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (355183920).

215083008 is an abundant number, since it is smaller than the sum of its proper divisors (495284832).

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

215083008 is a wasteful number, since it uses less digits than its factorization.

215083008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1702 (or 1679 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 215083008 is about 14665.7085747672. The cubic root of 215083008 is about 599.1497289678.

It can be divided in two parts, 2150 and 83008, that added together give a palindrome (85158).

The spelling of 215083008 in words is "two hundred fifteen million, eighty-three thousand, eight".

Divisors: 1 2 3 4 6 7 8 9 12 14 16 18 21 24 28 32 36 42 48 56 63 64 72 84 96 112 126 128 144 168 192 224 252 256 288 336 384 448 504 512 576 672 768 896 1008 1024 1152 1344 1536 1667 1792 2016 2048 2304 2688 3072 3334 3584 4032 4608 5001 5376 6144 6668 7168 8064 9216 10002 10752 11669 13336 14336 15003 16128 18432 20004 21504 23338 26672 30006 32256 35007 40008 43008 46676 53344 60012 64512 70014 80016 93352 105021 106688 120024 129024 140028 160032 186704 210042 213376 240048 280056 320064 373408 420084 426752 480096 560112 640128 746816 840168 853504 960192 1120224 1280256 1493632 1680336 1707008 1920384 2240448 2560512 2987264 3360672 3414016 3840768 4480896 5121024 5974528 6721344 7681536 8961792 10242048 11949056 13442688 15363072 17923584 23898112 26885376 30726144 35847168 53770752 71694336 107541504 215083008