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223304420 = 22511165221
BaseRepresentation
bin11010100111101…
…01101011100100
3120120012001002002
431103311223210
5424131220140
634054104432
75351025203
oct1523655344
9516161062
10223304420
1110505aa09
126294b118
13373567c1
142192b23a
151490e415
hexd4f5ae4

223304420 has 12 divisors (see below), whose sum is σ = 468939324. Its totient is φ = 89321760.

The previous prime is 223304413. The next prime is 223304441. The reversal of 223304420 is 24403322.

It can be written as a sum of positive squares in 2 ways, for example, as 152374336 + 70930084 = 12344^2 + 8422^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 11165221 = 223304420 / (2 + 2 + 3 + 3 + 0 + 4 + 4 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 223304392 and 223304401.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5582591 + ... + 5582630.

It is an arithmetic number, because the mean of its divisors is an integer number (39078277).

Almost surely, 2223304420 is an apocalyptic number.

223304420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223304420 is an abundant number, since it is smaller than the sum of its proper divisors (245634904).

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

223304420 is a wasteful number, since it uses less digits than its factorization.

223304420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11165230 (or 11165228 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 223304420 is about 14943.3737823826. The cubic root of 223304420 is about 606.6885144220.

Adding to 223304420 its reverse (24403322), we get a palindrome (247707742).

The spelling of 223304420 in words is "two hundred twenty-three million, three hundred four thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 11165221 22330442 44660884 55826105 111652210 223304420