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13204749 = 331114153
BaseRepresentation
bin110010010111…
…110100001101
3220211212111210
4302113310031
511340022444
61151005033
7220144545
oct62276415
926755453
1013204749
1174a9a18
124509779
13297447c
141a7a325
15125c7b9
hexc97d0d

13204749 has 8 divisors (see below), whose sum is σ = 17664192. Its totient is φ = 8774240.

The previous prime is 13204727. The next prime is 13204759. The reversal of 13204749 is 94740231.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13204749 - 25 = 13204717 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13204759) 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 7 ways as a sum of consecutive naturals, for example, 6144 + ... + 8009.

It is an arithmetic number, because the mean of its divisors is an integer number (2208024).

Almost surely, 213204749 is an apocalyptic number.

It is an amenable number.

13204749 is a deficient number, since it is larger than the sum of its proper divisors (4459443).

13204749 is a wasteful number, since it uses less digits than its factorization.

13204749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14467.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 13204749 is about 3633.8339257594. The cubic root of 13204749 is about 236.3614887693.

The spelling of 13204749 in words is "thirteen million, two hundred four thousand, seven hundred forty-nine".

Divisors: 1 3 311 933 14153 42459 4401583 13204749