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13255641 = 327210407
BaseRepresentation
bin110010100100…
…001111011001
3220221110022200
4302210033121
511343140031
61152040413
7220446120
oct62441731
926843280
1013255641
117534183
124533109
132991699
141a90ab7
15126c8e6
hexca43d9

13255641 has 12 divisors (see below), whose sum is σ = 21882432. Its totient is φ = 7574616.

The previous prime is 13255633. The next prime is 13255651. The reversal of 13255641 is 14655231.

13255641 is a `hidden beast` number, since 13 + 2 + 5 + 5 + 641 = 666.

13255641 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13255641 - 23 = 13255633 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (13255601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 105141 + ... + 105266.

It is an arithmetic number, because the mean of its divisors is an integer number (1823536).

Almost surely, 213255641 is an apocalyptic number.

It is an amenable number.

13255641 is a deficient number, since it is larger than the sum of its proper divisors (8626791).

13255641 is a wasteful number, since it uses less digits than its factorization.

13255641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210420 (or 210417 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 13255641 is about 3640.8297131286. The cubic root of 13255641 is about 236.6647505851.

The spelling of 13255641 in words is "thirteen million, two hundred fifty-five thousand, six hundred forty-one".

Divisors: 1 3 7 9 21 63 210407 631221 1472849 1893663 4418547 13255641