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222089 = 731727
BaseRepresentation
bin110110001110001001
3102021122112
4312032021
524101324
64432105
71613330
oct661611
9367575
10222089
1114194a
12a8635
137a11a
145ad17
1545c0e
hex36389

222089 has 4 divisors (see below), whose sum is σ = 253824. Its totient is φ = 190356.

The previous prime is 222073. The next prime is 222107. The reversal of 222089 is 980222.

222089 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 980222 = 2490111.

It is a cyclic number.

It is not a de Polignac number, because 222089 - 24 = 222073 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15857 + ... + 15870.

It is an arithmetic number, because the mean of its divisors is an integer number (63456).

2222089 is an apocalyptic number.

It is an amenable number.

222089 is a deficient number, since it is larger than the sum of its proper divisors (31735).

222089 is an equidigital number, since it uses as much as digits as its factorization.

222089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31734.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 222089 is about 471.2631961017. The cubic root of 222089 is about 60.5585799660.

The spelling of 222089 in words is "two hundred twenty-two thousand, eighty-nine".

Divisors: 1 7 31727 222089