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205745441 = 11171100243
BaseRepresentation
bin11000100001101…
…10110100100001
3112100010221200112
430100312310201
5410132323231
632225501105
75045543636
oct1420666441
9470127615
10205745441
11a6157660
1258aa1795
1333819485
141d47a18d
15130e192b
hexc436d21

205745441 has 8 divisors (see below), whose sum is σ = 237652704. Its totient is φ = 176038720.

The previous prime is 205745431. The next prime is 205745447. The reversal of 205745441 is 144547502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 205745441 - 26 = 205745377 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 205745398 and 205745407.

It is not an unprimeable number, because it can be changed into a prime (205745447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 549935 + ... + 550308.

It is an arithmetic number, because the mean of its divisors is an integer number (29706588).

Almost surely, 2205745441 is an apocalyptic number.

It is an amenable number.

205745441 is a deficient number, since it is larger than the sum of its proper divisors (31907263).

205745441 is a wasteful number, since it uses less digits than its factorization.

205745441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100271.

The product of its (nonzero) digits is 22400, while the sum is 32.

The square root of 205745441 is about 14343.8293701508. The cubic root of 205745441 is about 590.3506878089.

The spelling of 205745441 in words is "two hundred five million, seven hundred forty-five thousand, four hundred forty-one".

Divisors: 1 11 17 187 1100243 12102673 18704131 205745441