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28867484017 = 89697746489
BaseRepresentation
bin11010111000101000…
…101101100101110001
32202111211021010111201
4122320220231211301
5433110033442032
621132254211201
72041235364661
oct327050554561
982454233451
1028867484017
1111273a40009
1257177b3b01
13295086b1b8
14157bc841a1
15b3e4bd8e7
hex6b8a2d971

28867484017 has 8 divisors (see below), whose sum is σ = 29196649800. Its totient is φ = 28538425344.

The previous prime is 28867484011. The next prime is 28867484033. The reversal of 28867484017 is 71048476882.

It can be written as a sum of positive squares in 4 ways, for example, as 7929856 + 28859554161 = 2816^2 + 169881^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28867484017 - 219 = 28866959729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28867484011) 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, 597709 + ... + 644197.

It is an arithmetic number, because the mean of its divisors is an integer number (3649581225).

Almost surely, 228867484017 is an apocalyptic number.

It is an amenable number.

28867484017 is a deficient number, since it is larger than the sum of its proper divisors (329165783).

28867484017 is an equidigital number, since it uses as much as digits as its factorization.

28867484017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53555.

The product of its (nonzero) digits is 4816896, while the sum is 55.

The spelling of 28867484017 in words is "twenty-eight billion, eight hundred sixty-seven million, four hundred eighty-four thousand, seventeen".

Divisors: 1 89 6977 46489 620953 4137521 324353753 28867484017