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224254213 = 997224929
BaseRepresentation
bin11010101110111…
…01100100000101
3120121222021221121
431113131210011
5424402113323
634130313541
75362062241
oct1527354405
9517867847
10224254213
11105649567
12631288b1
13375c9c01
1421ad7421
1514a4aa5d
hexd5dd905

224254213 has 4 divisors (see below), whose sum is σ = 224480140. Its totient is φ = 224028288.

The previous prime is 224254211. The next prime is 224254223. The reversal of 224254213 is 312452422.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 312452422 = 2156226211.

It can be written as a sum of positive squares in 2 ways, for example, as 158206084 + 66048129 = 12578^2 + 8127^2 .

It is a cyclic number.

It is not a de Polignac number, because 224254213 - 21 = 224254211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224254211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111468 + ... + 113461.

It is an arithmetic number, because the mean of its divisors is an integer number (56120035).

Almost surely, 2224254213 is an apocalyptic number.

It is an amenable number.

224254213 is a deficient number, since it is larger than the sum of its proper divisors (225927).

224254213 is an equidigital number, since it uses as much as digits as its factorization.

224254213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225926.

The product of its digits is 3840, while the sum is 25.

The square root of 224254213 is about 14975.1197991869. The cubic root of 224254213 is about 607.5474516836.

The spelling of 224254213 in words is "two hundred twenty-four million, two hundred fifty-four thousand, two hundred thirteen".

Divisors: 1 997 224929 224254213