Search a number
-
+
206020443 = 3102167261
BaseRepresentation
bin11000100011110…
…01111101011011
3112100122220220210
430101321331123
5410220123233
632235422203
75051100456
oct1421717533
9470586823
10206020443
11a6325232
1258bb4963
13338b46b5
141d50c49d
1513148163
hexc479f5b

206020443 has 8 divisors (see below), whose sum is σ = 274967056. Its totient is φ = 137210400.

The previous prime is 206020417. The next prime is 206020447. The reversal of 206020443 is 344020602.

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

It is not a de Polignac number, because 206020443 - 28 = 206020187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206020447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30568 + ... + 36693.

It is an arithmetic number, because the mean of its divisors is an integer number (34370882).

Almost surely, 2206020443 is an apocalyptic number.

206020443 is a deficient number, since it is larger than the sum of its proper divisors (68946613).

206020443 is a wasteful number, since it uses less digits than its factorization.

206020443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68285.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 206020443 is about 14353.4122423903. The cubic root of 206020443 is about 590.6135941472.

The spelling of 206020443 in words is "two hundred six million, twenty thousand, four hundred forty-three".

Divisors: 1 3 1021 3063 67261 201783 68673481 206020443