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12223193 = 73167441
BaseRepresentation
bin101110101000…
…001011011001
3212000000001212
4232220023121
511112120233
61113552505
7205616063
oct56501331
925000055
1012223193
116999514
124115735
1326bc778
1418a2733
151116a48
hexba82d9

12223193 has 4 divisors (see below), whose sum is σ = 12390708. Its totient is φ = 12055680.

The previous prime is 12223139. The next prime is 12223199. The reversal of 12223193 is 39132221.

12223193 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39132221 = 67584063.

It can be written as a sum of positive squares in 2 ways, for example, as 9223369 + 2999824 = 3037^2 + 1732^2 .

It is a cyclic number.

It is not a de Polignac number, because 12223193 - 28 = 12222937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12223199) 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, 83648 + ... + 83793.

It is an arithmetic number, because the mean of its divisors is an integer number (3097677).

Almost surely, 212223193 is an apocalyptic number.

It is an amenable number.

12223193 is a deficient number, since it is larger than the sum of its proper divisors (167515).

12223193 is an equidigital number, since it uses as much as digits as its factorization.

12223193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167514.

The product of its digits is 648, while the sum is 23.

The square root of 12223193 is about 3496.1683311877. The cubic root of 12223193 is about 230.3535394619.

The spelling of 12223193 in words is "twelve million, two hundred twenty-three thousand, one hundred ninety-three".

Divisors: 1 73 167441 12223193