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223884081 = 342764001
BaseRepresentation
bin11010101100000…
…11001100110001
3120121021111020000
431112003030301
5424303242311
634114340213
75355661161
oct1526031461
9517244200
10223884081
11105416473
1262b8a669
13374ca5b5
1421a3c5a1
15149c6056
hexd583331

223884081 has 10 divisors (see below), whose sum is σ = 334444242. Its totient is φ = 149256000.

The previous prime is 223884079. The next prime is 223884083. The reversal of 223884081 is 180488322.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (223884079) and next prime (223884083).

It can be written as a sum of positive squares in only one way, i.e., 121550625 + 102333456 = 11025^2 + 10116^2 .

It is not a de Polignac number, because 223884081 - 21 = 223884079 is a prime.

It is a super-2 number, since 2×2238840812 = 100248163450429122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (223884083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1381920 + ... + 1382081.

Almost surely, 2223884081 is an apocalyptic number.

It is an amenable number.

223884081 is a deficient number, since it is larger than the sum of its proper divisors (110560161).

223884081 is an equidigital number, since it uses as much as digits as its factorization.

223884081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2764013 (or 2764004 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The square root of 223884081 is about 14962.7564639675. The cubic root of 223884081 is about 607.2130148830.

The spelling of 223884081 in words is "two hundred twenty-three million, eight hundred eighty-four thousand, eighty-one".

Divisors: 1 3 9 27 81 2764001 8292003 24876009 74628027 223884081