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13022461 = 41317621
BaseRepresentation
bin110001101011…
…010011111101
3220111121110101
4301223103331
511313204321
61143041101
7215455234
oct61532375
926447411
1013022461
117394a71
124440191
13290c4ca
141a2db1b
151223791
hexc6b4fd

13022461 has 4 divisors (see below), whose sum is σ = 13340124. Its totient is φ = 12704800.

The previous prime is 13022441. The next prime is 13022497. The reversal of 13022461 is 16422031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16422031 = 55729483.

It can be written as a sum of positive squares in 2 ways, for example, as 1223236 + 11799225 = 1106^2 + 3435^2 .

It is a cyclic number.

It is not a de Polignac number, because 13022461 - 27 = 13022333 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 (13022441) 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, 158770 + ... + 158851.

It is an arithmetic number, because the mean of its divisors is an integer number (3335031).

Almost surely, 213022461 is an apocalyptic number.

It is an amenable number.

13022461 is a deficient number, since it is larger than the sum of its proper divisors (317663).

13022461 is an equidigital number, since it uses as much as digits as its factorization.

13022461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317662.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 13022461 is about 3608.6647114965. The cubic root of 13022461 is about 235.2688096469.

Adding to 13022461 its reverse (16422031), we get a palindrome (29444492).

The spelling of 13022461 in words is "thirteen million, twenty-two thousand, four hundred sixty-one".

Divisors: 1 41 317621 13022461