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224012223 = 3919599
BaseRepresentation
bin11010101101000…
…10011110111111
3120121112000000000
431112202132333
5424321342343
634121205343
75360033601
oct1526423677
9517460000
10224012223
111054a3776
1263030853
1337543a16
1421a73171
15149eded3
hexd5a27bf

224012223 has 40 divisors (see below), whose sum is σ = 354288000. Its totient is φ = 141245208.

The previous prime is 224012209. The next prime is 224012267. The reversal of 224012223 is 322210422.

It is not a de Polignac number, because 224012223 - 24 = 224012207 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 224012196 and 224012205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224012323) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 373678 + ... + 374276.

It is an arithmetic number, because the mean of its divisors is an integer number (8857200).

Almost surely, 2224012223 is an apocalyptic number.

224012223 is a deficient number, since it is larger than the sum of its proper divisors (130275777).

224012223 is an frugal number, since it uses more digits than its factorization.

224012223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645 (or 621 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 224012223 is about 14967.0378832954. The cubic root of 224012223 is about 607.3288406703.

Adding to 224012223 its reverse (322210422), we get a palindrome (546222645).

The spelling of 224012223 in words is "two hundred twenty-four million, twelve thousand, two hundred twenty-three".

Divisors: 1 3 9 19 27 57 81 171 243 513 599 729 1539 1797 2187 4617 5391 6561 11381 13851 16173 19683 34143 41553 48519 102429 124659 145557 307287 373977 436671 921861 1310013 2765583 3930039 8296749 11790117 24890247 74670741 224012223