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206422111 = 797304009
BaseRepresentation
bin11000100110111…
…00000001011111
3112101102022220101
430103130001133
5410321001421
632252201531
75054362510
oct1423340137
9471368811
10206422111
11a6579a95
12591692a7
13339c547c
141d5b4a07
15131c7191
hexc4dc05f

206422111 has 8 divisors (see below), whose sum is σ = 238343840. Its totient is φ = 175108608.

The previous prime is 206422093. The next prime is 206422133. The reversal of 206422111 is 111224602.

206422111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 206422111 - 219 = 205897823 is a prime.

It is a super-2 number, since 2×2064221112 = 85220175819392642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206422141) 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, 151326 + ... + 152683.

It is an arithmetic number, because the mean of its divisors is an integer number (29792980).

Almost surely, 2206422111 is an apocalyptic number.

206422111 is a deficient number, since it is larger than the sum of its proper divisors (31921729).

206422111 is an equidigital number, since it uses as much as digits as its factorization.

206422111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304113.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 206422111 is about 14367.3975026795. The cubic root of 206422111 is about 590.9971751358.

Adding to 206422111 its reverse (111224602), we get a palindrome (317646713).

The spelling of 206422111 in words is "two hundred six million, four hundred twenty-two thousand, one hundred eleven".

Divisors: 1 7 97 679 304009 2128063 29488873 206422111