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19226 = 29613

19226 has 4 divisors (see below), whose sum is σ = 28842. Its totient is φ = 9612.

The previous prime is 19219. The next prime is 19231. The reversal of 19226 is 62291.

19226 is an esthetic number in base 8, because in such base its adjacent digits differ by 1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62291 = 167373.

It can be written as a sum of positive squares in only one way, i.e., 10201 + 9025 = 101^2 + 95^2 .

It is a Curzon number.

It is a plaindrome in base 11 and base 13.

It is a junction number, because it is equal to n+sod(n) for n = 19198 and 19207.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 19226.

It is an unprimeable number.

19226 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4805 + ... + 4808.

219226 is an apocalyptic number.

19226 is a deficient number, since it is larger than the sum of its proper divisors (9616).

19226 is an equidigital number, since it uses as much as digits as its factorization.

19226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9615.

The product of its digits is 216, while the sum is 20.

The square root of 19226 is about 138.6578522840. The cubic root of 19226 is about 26.7893995353.

The spelling of 19226 in words is "nineteen thousand, two hundred twenty-six".

Divisors: 1 2 9613 19226