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13044149 = 31420779
BaseRepresentation
bin110001110000…
…100110110101
3220112201012122
4301300212311
511314403044
61143325325
7215605406
oct61604665
926481178
1013044149
1173aa298
124450845
132919341
141a379ad
151229dee
hexc709b5

13044149 has 4 divisors (see below), whose sum is σ = 13464960. Its totient is φ = 12623340.

The previous prime is 13044137. The next prime is 13044169. The reversal of 13044149 is 94144031.

13044149 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 13044149 - 28 = 13043893 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13044169) 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, 210359 + ... + 210420.

It is an arithmetic number, because the mean of its divisors is an integer number (3366240).

Almost surely, 213044149 is an apocalyptic number.

It is an amenable number.

13044149 is a deficient number, since it is larger than the sum of its proper divisors (420811).

13044149 is an equidigital number, since it uses as much as digits as its factorization.

13044149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420810.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 13044149 is about 3611.6684510071. The cubic root of 13044149 is about 235.3993451357.

The spelling of 13044149 in words is "thirteen million, forty-four thousand, one hundred forty-nine".

Divisors: 1 31 420779 13044149