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13780341 = 33510383
BaseRepresentation
bin110100100100…
…010101110101
3221221010002000
4310210111311
512011432331
61211205513
7225062631
oct64442565
927833060
1013780341
117862413
124746899
132b16463
141b89dc1
1513230e6
hexd24575

13780341 has 8 divisors (see below), whose sum is σ = 20415360. Its totient is φ = 9186876.

The previous prime is 13780331. The next prime is 13780369. The reversal of 13780341 is 14308731.

13780341 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13780341 - 214 = 13763957 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 510383 = 13780341 / (1 + 3 + 7 + 8 + 0 + 3 + 4 + 1).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13780331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 255165 + ... + 255218.

It is an arithmetic number, because the mean of its divisors is an integer number (2551920).

Almost surely, 213780341 is an apocalyptic number.

It is an amenable number.

13780341 is a deficient number, since it is larger than the sum of its proper divisors (6635019).

13780341 is an equidigital number, since it uses as much as digits as its factorization.

13780341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510392 (or 510386 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 13780341 is about 3712.1881687221. The cubic root of 13780341 is about 239.7470773024.

The spelling of 13780341 in words is "thirteen million, seven hundred eighty thousand, three hundred forty-one".

Divisors: 1 3 9 27 510383 1531149 4593447 13780341