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222130 = 2597229
BaseRepresentation
bin110110001110110010
3102021201001
4312032302
524102010
64432214
71613416
oct661662
9367631
10222130
11141987
12a866a
137a14c
145ad46
1545c3a
hex363b2

222130 has 16 divisors (see below), whose sum is σ = 405720. Its totient is φ = 87552.

The previous prime is 222127. The next prime is 222137. The reversal of 222130 is 31222.

It can be written as a sum of positive squares in 4 ways, for example, as 210681 + 11449 = 459^2 + 107^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (222137) 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, 856 + ... + 1084.

2222130 is an apocalyptic number.

222130 is a deficient number, since it is larger than the sum of its proper divisors (183590).

222130 is a wasteful number, since it uses less digits than its factorization.

222130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333.

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 222130 is about 471.3066942024. The cubic root of 222130 is about 60.5623063234.

Adding to 222130 its reverse (31222), we get a palindrome (253352).

The spelling of 222130 in words is "two hundred twenty-two thousand, one hundred thirty".

Divisors: 1 2 5 10 97 194 229 458 485 970 1145 2290 22213 44426 111065 222130