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28858574743189 = 67430724996167
BaseRepresentation
bin1101000111111001010010…
…00110001010011010010101
310210011212000200200220110121
412203330221012022122111
512240304330113240224
6141213240214351541
76035651245653202
oct643745106123225
9123155020626417
1028858574743189
119216942112534
1232a0b9a35b5b1
13131447622bbc9
1471aa9630aca9
15350a2765cbe4
hex1a3f2918a695

28858574743189 has 4 divisors (see below), whose sum is σ = 29289299739424. Its totient is φ = 28427849746956.

The previous prime is 28858574743153. The next prime is 28858574743211. The reversal of 28858574743189 is 98134747585882.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28858574743189 - 233 = 28849984808597 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 (28858574749189) 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, 215362498017 + ... + 215362498150.

It is an arithmetic number, because the mean of its divisors is an integer number (7322324934856).

Almost surely, 228858574743189 is an apocalyptic number.

It is an amenable number.

28858574743189 is a deficient number, since it is larger than the sum of its proper divisors (430724996235).

28858574743189 is an equidigital number, since it uses as much as digits as its factorization.

28858574743189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430724996234.

The product of its digits is 4335206400, while the sum is 79.

The spelling of 28858574743189 in words is "twenty-eight trillion, eight hundred fifty-eight billion, five hundred seventy-four million, seven hundred forty-three thousand, one hundred eighty-nine".

Divisors: 1 67 430724996167 28858574743189