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13242233 = 22036011
BaseRepresentation
bin110010100000…
…111101111001
3220220202221002
4302200331321
511342222413
61151454345
7220362044
oct62407571
926822832
1013242233
1175250a4
1245273b5
132988554
141a89c5b
151268958
hexca0f79

13242233 has 4 divisors (see below), whose sum is σ = 13250448. Its totient is φ = 13234020.

The previous prime is 13242199. The next prime is 13242253. The reversal of 13242233 is 33224231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 33224231 = 153121701.

It is a cyclic number.

It is not a de Polignac number, because 13242233 - 26 = 13242169 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13242253) 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 3 ways as a sum of consecutive naturals, for example, 803 + ... + 5208.

It is an arithmetic number, because the mean of its divisors is an integer number (3312612).

Almost surely, 213242233 is an apocalyptic number.

It is an amenable number.

13242233 is a deficient number, since it is larger than the sum of its proper divisors (8215).

13242233 is an equidigital number, since it uses as much as digits as its factorization.

13242233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8214.

The product of its digits is 864, while the sum is 20.

The square root of 13242233 is about 3638.9879087461. The cubic root of 13242233 is about 236.5849286822.

Adding to 13242233 its reverse (33224231), we get a palindrome (46466464).

The spelling of 13242233 in words is "thirteen million, two hundred forty-two thousand, two hundred thirty-three".

Divisors: 1 2203 6011 13242233