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12224163 = 371930637
BaseRepresentation
bin101110101000…
…011010100011
3212000001101210
4232220122203
511112133123
61114001203
7205621650
oct56503243
925001353
1012224163
11699a216
124116203
1326c0043
1418a2c27
151116e93
hexba86a3

12224163 has 16 divisors (see below), whose sum is σ = 19608320. Its totient is φ = 6617376.

The previous prime is 12224159. The next prime is 12224189. The reversal of 12224163 is 36142221.

12224163 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12224163 - 22 = 12224159 is a prime.

It is a super-2 number, since 2×122241632 = 298860322101138, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12224153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14920 + ... + 15717.

It is an arithmetic number, because the mean of its divisors is an integer number (1225520).

Almost surely, 212224163 is an apocalyptic number.

12224163 is a deficient number, since it is larger than the sum of its proper divisors (7384157).

12224163 is a wasteful number, since it uses less digits than its factorization.

12224163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30666.

The product of its digits is 576, while the sum is 21.

The square root of 12224163 is about 3496.3070517333. The cubic root of 12224163 is about 230.3596327149.

Adding to 12224163 its reverse (36142221), we get a palindrome (48366384).

The spelling of 12224163 in words is "twelve million, two hundred twenty-four thousand, one hundred sixty-three".

Divisors: 1 3 7 19 21 57 133 399 30637 91911 214459 582103 643377 1746309 4074721 12224163