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222430 = 25132959
BaseRepresentation
bin110110010011011110
3102022010011
4312103132
524104210
64433434
71614325
oct662336
9368104
10222430
1114212a
12a887a
137a320
145b0bc
1545d8a
hex364de

222430 has 32 divisors (see below), whose sum is σ = 453600. Its totient is φ = 77952.

The previous prime is 222419. The next prime is 222437. The reversal of 222430 is 34222.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a self number, because there is not a number n which added to its sum of digits gives 222430.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222437) by changing a digit.

222430 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3741 + ... + 3799.

It is an arithmetic number, because the mean of its divisors is an integer number (14175).

2222430 is an apocalyptic number.

222430 is an abundant number, since it is smaller than the sum of its proper divisors (231170).

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

222430 is a wasteful number, since it uses less digits than its factorization.

222430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108.

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 222430 is about 471.6248509144. The cubic root of 222430 is about 60.5895584111.

Adding to 222430 its reverse (34222), we get a palindrome (256652).

The spelling of 222430 in words is "two hundred twenty-two thousand, four hundred thirty".

Divisors: 1 2 5 10 13 26 29 58 59 65 118 130 145 290 295 377 590 754 767 1534 1711 1885 3422 3770 3835 7670 8555 17110 22243 44486 111215 222430