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20683160 = 235517079
BaseRepresentation
bin100111011100…
…1100110011000
31102220210221222
41032321212120
520243330120
62015151212
7340542521
oct116714630
942823858
1020683160
1110747623
126b15508
134392374
142a65848
151c38525
hex13b9998

20683160 has 16 divisors (see below), whose sum is σ = 46537200. Its totient is φ = 8273248.

The previous prime is 20683151. The next prime is 20683171. The reversal of 20683160 is 6138602.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 258500 + ... + 258579.

It is an arithmetic number, because the mean of its divisors is an integer number (2908575).

Almost surely, 220683160 is an apocalyptic number.

20683160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20683160 is an abundant number, since it is smaller than the sum of its proper divisors (25854040).

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

20683160 is a wasteful number, since it uses less digits than its factorization.

20683160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517090 (or 517086 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 20683160 is about 4547.8742286919. The cubic root of 20683160 is about 274.4978605301.

The spelling of 20683160 in words is "twenty million, six hundred eighty-three thousand, one hundred sixty".

Divisors: 1 2 4 5 8 10 20 40 517079 1034158 2068316 2585395 4136632 5170790 10341580 20683160