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205480230 = 23543159287
BaseRepresentation
bin11000011111101…
…10000100100110
3112022122110212220
430033312010212
5410100331410
632220053210
75043360504
oct1417660446
9468573786
10205480230
11a5a9637a
1258994206
1333755847
141d40b674
151308d070
hexc3f6126

205480230 has 32 divisors (see below), whose sum is σ = 504624384. Its totient is φ = 53520096.

The previous prime is 205480213. The next prime is 205480237. The reversal of 205480230 is 32084502.

205480230 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 205480230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205480237) 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, 78354 + ... + 80933.

It is an arithmetic number, because the mean of its divisors is an integer number (15769512).

Almost surely, 2205480230 is an apocalyptic number.

205480230 is an abundant number, since it is smaller than the sum of its proper divisors (299144154).

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

205480230 is a wasteful number, since it uses less digits than its factorization.

205480230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159340.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 205480230 is about 14334.5816123108. The cubic root of 205480230 is about 590.0969198245.

The spelling of 205480230 in words is "two hundred five million, four hundred eighty thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 43 86 129 215 258 430 645 1290 159287 318574 477861 796435 955722 1592870 2389305 4778610 6849341 13698682 20548023 34246705 41096046 68493410 102740115 205480230