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206247041 = 71121318731
BaseRepresentation
bin11000100101100…
…01010010000001
3112101002102202022
430102301102001
5410244401131
632244331225
75053033220
oct1422612201
9471072668
10206247041
11a646a500
12590a3b15
1333963890
141d56acb7
151319037b
hexc4b1481

206247041 has 24 divisors (see below), whose sum is σ = 279031872. Its totient is φ = 148341600.

The previous prime is 206247031. The next prime is 206247047. The reversal of 206247041 is 140742602.

It is not a de Polignac number, because 206247041 - 214 = 206230657 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 206247041.

It is not an unprimeable number, because it can be changed into a prime (206247047) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1646 + ... + 20376.

It is an arithmetic number, because the mean of its divisors is an integer number (11626328).

Almost surely, 2206247041 is an apocalyptic number.

It is an amenable number.

206247041 is a deficient number, since it is larger than the sum of its proper divisors (72784831).

206247041 is a wasteful number, since it uses less digits than its factorization.

206247041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18773 (or 18762 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 206247041 is about 14361.3035968188. The cubic root of 206247041 is about 590.8300497261.

Adding to 206247041 its reverse (140742602), we get a palindrome (346989643).

The spelling of 206247041 in words is "two hundred six million, two hundred forty-seven thousand, forty-one".

Divisors: 1 7 11 13 77 91 121 143 847 1001 1573 11011 18731 131117 206041 243503 1442287 1704521 2266451 2678533 15865157 18749731 29463863 206247041