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13019429 = 18017229
BaseRepresentation
bin110001101010…
…100100100101
3220111110022002
4301222210211
511313110204
61143015045
7215443343
oct61524445
926443262
1013019429
117392765
12443a485
13290b007
141a2c993
15122291e
hexc6a925

13019429 has 4 divisors (see below), whose sum is σ = 13028460. Its totient is φ = 13010400.

The previous prime is 13019417. The next prime is 13019431. The reversal of 13019429 is 92491031.

It is a happy number.

13019429 is digitally balanced in base 3, 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 brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 92491031 = 194867949.

It can be written as a sum of positive squares in 2 ways, for example, as 8567329 + 4452100 = 2927^2 + 2110^2 .

It is a cyclic number.

It is not a de Polignac number, because 13019429 - 212 = 13015333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13019459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1814 + ... + 5415.

It is an arithmetic number, because the mean of its divisors is an integer number (3257115).

Almost surely, 213019429 is an apocalyptic number.

It is an amenable number.

13019429 is a deficient number, since it is larger than the sum of its proper divisors (9031).

13019429 is an equidigital number, since it uses as much as digits as its factorization.

13019429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9030.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 13019429 is about 3608.2445870534. The cubic root of 13019429 is about 235.2505491353.

The spelling of 13019429 in words is "thirteen million, nineteen thousand, four hundred twenty-nine".

Divisors: 1 1801 7229 13019429