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13049449 = 72964283
BaseRepresentation
bin110001110001…
…111001101001
3220112222110221
4301301321221
511320040244
61143410041
7215630020
oct61617151
926488427
1013049449
117403276
124453921
13291b88a
141a398b7
15122b784
hexc71e69

13049449 has 8 divisors (see below), whose sum is σ = 15428160. Its totient is φ = 10799376.

The previous prime is 13049437. The next prime is 13049453. The reversal of 13049449 is 94494031.

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

It is not a de Polignac number, because 13049449 - 25 = 13049417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13049479) 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, 31939 + ... + 32344.

It is an arithmetic number, because the mean of its divisors is an integer number (1928520).

Almost surely, 213049449 is an apocalyptic number.

It is an amenable number.

13049449 is a deficient number, since it is larger than the sum of its proper divisors (2378711).

13049449 is an equidigital number, since it uses as much as digits as its factorization.

13049449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64319.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 13049449 is about 3612.4021094003. The cubic root of 13049449 is about 235.4312227127.

The spelling of 13049449 in words is "thirteen million, forty-nine thousand, four hundred forty-nine".

Divisors: 1 7 29 203 64283 449981 1864207 13049449