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2187208107 = 327311911131
BaseRepresentation
bin1000001001011110…
…0010010110101011
312122102121200110200
42002113202112223
513434411124412
61001011243243
7105125651010
oct20227422653
95572550420
102187208107
11a22692907
125105a9523
1328b1a30a6
1416a6ab707
15cc0419dc
hex825e25ab

2187208107 has 24 divisors (see below), whose sum is σ = 3612111360. Its totient is φ = 1249320240.

The previous prime is 2187208091. The next prime is 2187208129. The reversal of 2187208107 is 7018027812.

It is a happy number.

It is not a de Polignac number, because 2187208107 - 24 = 2187208091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2187208147) 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, 190932 + ... + 202062.

It is an arithmetic number, because the mean of its divisors is an integer number (150504640).

Almost surely, 22187208107 is an apocalyptic number.

2187208107 is a deficient number, since it is larger than the sum of its proper divisors (1424903253).

2187208107 is a wasteful number, since it uses less digits than its factorization.

2187208107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14263 (or 14260 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 36.

The square root of 2187208107 is about 46767.5967631436. The cubic root of 2187208107 is about 1298.0657837447.

The spelling of 2187208107 in words is "two billion, one hundred eighty-seven million, two hundred eight thousand, one hundred seven".

Divisors: 1 3 7 9 21 63 3119 9357 11131 21833 28071 33393 65499 77917 100179 196497 233751 701253 34717589 104152767 243023123 312458301 729069369 2187208107