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13028896479 = 34342965493
BaseRepresentation
bin11000010001001010…
…10010111011011111
31020122000011111222110
430020211102323133
5203140344141404
65552502245103
7640603535634
oct141045227337
936560144873
1013028896479
115586521845
122637426793
1312c837b601
148b852c18b
15513c5db89
hex308952edf

13028896479 has 4 divisors (see below), whose sum is σ = 17371861976. Its totient is φ = 8685930984.

The previous prime is 13028896477. The next prime is 13028896513. The reversal of 13028896479 is 97469882031.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 13028896479 - 21 = 13028896477 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 (13028896471) 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, 2171482744 + ... + 2171482749.

It is an arithmetic number, because the mean of its divisors is an integer number (4342965494).

Almost surely, 213028896479 is an apocalyptic number.

13028896479 is a deficient number, since it is larger than the sum of its proper divisors (4342965497).

13028896479 is an equidigital number, since it uses as much as digits as its factorization.

13028896479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4342965496.

The product of its (nonzero) digits is 5225472, while the sum is 57.

The spelling of 13028896479 in words is "thirteen billion, twenty-eight million, eight hundred ninety-six thousand, four hundred seventy-nine".

Divisors: 1 3 4342965493 13028896479