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216925118510884 = 227210520272
BaseRepresentation
bin110001010100101011010000…
…101000011011011100100100
31001110001211122111002111201021
4301110223100220123130210
5211413100120314322014
62045210005041540524
763456215442045100
oct6124532050333444
91043054574074637
10216925118510884
116313447619a613
12203b565b344744
139406c49191984
143b7d335d20900
151a12ac0778624
hexc54ad0a1b724

216925118510884 has 27 divisors (see below), whose sum is σ = 441597982442043. Its totient is φ = 92967819562968.

The previous prime is 216925118510869. The next prime is 216925118510911. The reversal of 216925118510884 is 488015811529612.

The square root of 216925118510884 is 14728378.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×2169251185108842 (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 205671279 + ... + 206723305.

Almost surely, 2216925118510884 is an apocalyptic number.

216925118510884 is the 14728378-th square number.

It is an amenable number.

216925118510884 is an abundant number, since it is smaller than the sum of its proper divisors (224672863931159).

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

216925118510884 is an frugal number, since it uses more digits than its factorization.

216925118510884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2104072 (or 1052036 counting only the distinct ones).

The product of its (nonzero) digits is 11059200, while the sum is 61.

The spelling of 216925118510884 in words is "two hundred sixteen trillion, nine hundred twenty-five billion, one hundred eighteen million, five hundred ten thousand, eight hundred eighty-four".

Divisors: 1 2 4 7 14 28 49 98 196 1052027 2104054 4208108 7364189 14728378 29456756 51549323 103098646 206197292 1106760808729 2213521617458 4427043234916 7747325661103 15494651322206 30989302644412 54231279627721 108462559255442 216925118510884