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13280419 = 27494831
BaseRepresentation
bin110010101010…
…010010100011
3220222201022101
4302222102203
511344433134
61152351231
7220611265
oct62522243
926881271
1013280419
117550859
124545517
13299ca49
141a99b35
151274e14
hexcaa4a3

13280419 has 4 divisors (see below), whose sum is σ = 13288000. Its totient is φ = 13272840.

The previous prime is 13280413. The next prime is 13280437. The reversal of 13280419 is 91408231.

It is a happy number.

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: 91408231 = 190747933.

It is a cyclic number.

It is not a de Polignac number, because 13280419 - 27 = 13280291 is a prime.

It is a super-2 number, since 2×132804192 = 352739057631122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13280413) 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, 334 + ... + 5164.

It is an arithmetic number, because the mean of its divisors is an integer number (3322000).

Almost surely, 213280419 is an apocalyptic number.

13280419 is a deficient number, since it is larger than the sum of its proper divisors (7581).

13280419 is an equidigital number, since it uses as much as digits as its factorization.

13280419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7580.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 13280419 is about 3644.2309202354. The cubic root of 13280419 is about 236.8121200254.

The spelling of 13280419 in words is "thirteen million, two hundred eighty thousand, four hundred nineteen".

Divisors: 1 2749 4831 13280419