Search a number
-
+
206807892 = 22317233991
BaseRepresentation
bin11000101001110…
…10001101010100
3112102010221002120
430110322031110
5410420323032
632304335540
75060560314
oct1424721524
9472127076
10206807892
11a6812915
12593145b0
1333acbc45
141d675444
151325162c
hexc53a354

206807892 has 12 divisors (see below), whose sum is σ = 482551776. Its totient is φ = 68935960.

The previous prime is 206807891. The next prime is 206807899. The reversal of 206807892 is 298708602.

It is a happy number.

206807892 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206807891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8616984 + ... + 8617007.

It is an arithmetic number, because the mean of its divisors is an integer number (40212648).

Almost surely, 2206807892 is an apocalyptic number.

It is an amenable number.

206807892 is an abundant number, since it is smaller than the sum of its proper divisors (275743884).

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

206807892 is a wasteful number, since it uses less digits than its factorization.

206807892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17233998 (or 17233996 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 206807892 is about 14380.8168057312. The cubic root of 206807892 is about 591.3651163321.

The spelling of 206807892 in words is "two hundred six million, eight hundred seven thousand, eight hundred ninety-two".

Divisors: 1 2 3 4 6 12 17233991 34467982 51701973 68935964 103403946 206807892