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20585060 = 2254761359
BaseRepresentation
bin100111010000…
…1101001100100
31102201211101122
41032201221210
520232210220
62013113112
7336653516
oct116415144
942654348
1020585060
111068a951
126a88798
134359812
142a3bbb6
151c19425
hex13a1a64

20585060 has 48 divisors (see below), whose sum is σ = 44997120. Its totient is φ = 7904640.

The previous prime is 20585053. The next prime is 20585063. The reversal of 20585060 is 6058502.

It is not an unprimeable number, because it can be changed into a prime (20585063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57161 + ... + 57519.

It is an arithmetic number, because the mean of its divisors is an integer number (937440).

Almost surely, 220585060 is an apocalyptic number.

20585060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20585060 is an abundant number, since it is smaller than the sum of its proper divisors (24412060).

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

20585060 is a wasteful number, since it uses less digits than its factorization.

20585060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476 (or 474 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 20585060 is about 4537.0761510030. The cubic root of 20585060 is about 274.0631924861.

The spelling of 20585060 in words is "twenty million, five hundred eighty-five thousand, sixty".

Divisors: 1 2 4 5 10 20 47 61 94 122 188 235 244 305 359 470 610 718 940 1220 1436 1795 2867 3590 5734 7180 11468 14335 16873 21899 28670 33746 43798 57340 67492 84365 87596 109495 168730 218990 337460 437980 1029253 2058506 4117012 5146265 10292530 20585060