Search a number
BaseRepresentation
bin110101111011011001
3102020000002
4311323121
524032024
64422345
71606664
oct657331
9366002
10220889
11140a59
12a79b5
1379706
145a6db
15456ae
hex35ed9

220889 has 2 divisors, whose sum is σ = 220890. Its totient is φ = 220888.

The previous prime is 220879. The next prime is 220897. The reversal of 220889 is 988022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126025 + 94864 = 355^2 + 308^2 .

It is a cyclic number.

It is not a de Polignac number, because 220889 - 24 = 220873 is a prime.

It is a plaindrome in base 15.

It is not a weakly prime, because it can be changed into another prime (220859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110444 + 110445.

It is an arithmetic number, because the mean of its divisors is an integer number (110445).

2220889 is an apocalyptic number.

It is an amenable number.

220889 is a deficient number, since it is larger than the sum of its proper divisors (1).

220889 is an equidigital number, since it uses as much as digits as its factorization.

220889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 220889 is about 469.9882977267. The cubic root of 220889 is about 60.4493120970.

The spelling of 220889 in words is "two hundred twenty thousand, eight hundred eighty-nine".