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13204433 = 111200403
BaseRepresentation
bin110010010111…
…101111010001
3220211212002002
4302113233101
511340020213
61151003345
7220143614
oct62275721
926755062
1013204433
1174a9760
124509555
132974298
141a7a17b
15125c658
hexc97bd1

13204433 has 4 divisors (see below), whose sum is σ = 14404848. Its totient is φ = 12004020.

The previous prime is 13204421. The next prime is 13204447. The reversal of 13204433 is 33440231.

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 an emirpimes, since its reverse is a distinct semiprime: 33440231 = 113040021.

It is a cyclic number.

It is not a de Polignac number, because 13204433 - 210 = 13203409 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 (13204453) 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, 600191 + ... + 600212.

It is an arithmetic number, because the mean of its divisors is an integer number (3601212).

Almost surely, 213204433 is an apocalyptic number.

It is an amenable number.

13204433 is a deficient number, since it is larger than the sum of its proper divisors (1200415).

13204433 is a wasteful number, since it uses less digits than its factorization.

13204433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1200414.

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

The square root of 13204433 is about 3633.7904452513. The cubic root of 13204433 is about 236.3596033156.

Adding to 13204433 its reverse (33440231), we get a palindrome (46644664).

The spelling of 13204433 in words is "thirteen million, two hundred four thousand, four hundred thirty-three".

Divisors: 1 11 1200403 13204433