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224411221 = 1814572713
BaseRepresentation
bin11010110000000…
…11111001010101
3120122021021022201
431120003321111
5424422124341
634133524501
75363315056
oct1530037125
9518237281
10224411221
11105746521
12631a3731
1337653508
1421b3872d
1514a7c331
hexd603e55

224411221 has 8 divisors (see below), whose sum is σ = 226228184. Its totient is φ = 222600960.

The previous prime is 224411189. The next prime is 224411267. The reversal of 224411221 is 122114422.

Adding to 224411221 its reverse (122114422), we get a palindrome (346525643).

224411221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 69906321 + 154504900 = 8361^2 + 12430^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 224411221 - 25 = 224411189 is a prime.

It is a super-2 number, since 2×2244112212 = 100720792221421682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224411321) 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, 81361 + ... + 84073.

It is an arithmetic number, because the mean of its divisors is an integer number (28278523).

Almost surely, 2224411221 is an apocalyptic number.

It is an amenable number.

224411221 is a deficient number, since it is larger than the sum of its proper divisors (1816963).

224411221 is a wasteful number, since it uses less digits than its factorization.

224411221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3351.

The product of its digits is 256, while the sum is 19.

The square root of 224411221 is about 14980.3611772213. The cubic root of 224411221 is about 607.6892068162.

The spelling of 224411221 in words is "two hundred twenty-four million, four hundred eleven thousand, two hundred twenty-one".

Divisors: 1 181 457 2713 82717 491053 1239841 224411221