Search a number
-
+
222232230 = 232511220407
BaseRepresentation
bin11010011111011…
…11111010100110
3120111011120022100
431033233322212
5423342412410
634015112530
75335641243
oct1517577246
9514146270
10222232230
11104498400
1262512746
133706c77c
142172c5ca
151479b8c0
hexd3efea6

222232230 has 72 divisors (see below), whose sum is σ = 635137776. Its totient is φ = 53871840.

The previous prime is 222232229. The next prime is 222232243. The reversal of 222232230 is 32232222.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 687 + ... + 21093.

It is an arithmetic number, because the mean of its divisors is an integer number (8821358).

Almost surely, 2222232230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222232230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (317568888).

222232230 is an abundant number, since it is smaller than the sum of its proper divisors (412905546).

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

222232230 is a wasteful number, since it uses less digits than its factorization.

222232230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20442 (or 20428 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 222232230 is about 14907.4555172907. The cubic root of 222232230 is about 605.7159568104.

Adding to 222232230 its reverse (32232222), we get a palindrome (254464452).

The spelling of 222232230 in words is "two hundred twenty-two million, two hundred thirty-two thousand, two hundred thirty".

Divisors: 1 2 3 5 6 9 10 11 15 18 22 30 33 45 55 66 90 99 110 121 165 198 242 330 363 495 605 726 990 1089 1210 1815 2178 3630 5445 10890 20407 40814 61221 102035 122442 183663 204070 224477 306105 367326 448954 612210 673431 918315 1122385 1346862 1836630 2020293 2244770 2469247 3367155 4040586 4938494 6734310 7407741 10101465 12346235 14815482 20202930 22223223 24692470 37038705 44446446 74077410 111116115 222232230