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13244423 = 78716829
BaseRepresentation
bin110010100001…
…100000000111
3220220212221012
4302201200013
511342310143
61151512435
7220401323
oct62414007
926825835
1013244423
117526805
12452871b
13298954a
141a8a983
151269418
hexca1807

13244423 has 4 divisors (see below), whose sum is σ = 13262040. Its totient is φ = 13226808.

The previous prime is 13244383. The next prime is 13244431. The reversal of 13244423 is 32444231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13244423 - 28 = 13244167 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 (13244443) 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, 7628 + ... + 9201.

It is an arithmetic number, because the mean of its divisors is an integer number (3315510).

Almost surely, 213244423 is an apocalyptic number.

13244423 is a deficient number, since it is larger than the sum of its proper divisors (17617).

13244423 is an equidigital number, since it uses as much as digits as its factorization.

13244423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17616.

The product of its digits is 2304, while the sum is 23.

The square root of 13244423 is about 3639.2888041484. The cubic root of 13244423 is about 236.5979700988.

Adding to 13244423 its reverse (32444231), we get a palindrome (45688654).

The spelling of 13244423 in words is "thirteen million, two hundred forty-four thousand, four hundred twenty-three".

Divisors: 1 787 16829 13244423