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205060730 = 25719154181
BaseRepresentation
bin11000011100011…
…11101001111010
3112021212011102212
430032033221322
5404443420410
632203055122
75036662460
oct1416175172
9467764385
10205060730
11a582a186
12588114a2
1333639914
141d33c830
1513008b05
hexc38fa7a

205060730 has 32 divisors (see below), whose sum is σ = 444044160. Its totient is φ = 66605760.

The previous prime is 205060729. The next prime is 205060733. The reversal of 205060730 is 37060502.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 205060696 and 205060705.

It is not an unprimeable number, because it can be changed into a prime (205060733) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75761 + ... + 78420.

It is an arithmetic number, because the mean of its divisors is an integer number (13876380).

Almost surely, 2205060730 is an apocalyptic number.

205060730 is an abundant number, since it is smaller than the sum of its proper divisors (238983430).

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

205060730 is a wasteful number, since it uses less digits than its factorization.

205060730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154214.

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 205060730 is about 14319.9416898254. The cubic root of 205060730 is about 589.6950736892.

The spelling of 205060730 in words is "two hundred five million, sixty thousand, seven hundred thirty".

Divisors: 1 2 5 7 10 14 19 35 38 70 95 133 190 266 665 1330 154181 308362 770905 1079267 1541810 2158534 2929439 5396335 5858878 10792670 14647195 20506073 29294390 41012146 102530365 205060730