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28865316307 = 1031153118287
BaseRepresentation
bin11010111000100000…
…011100010111010011
32202111200011222222011
4122320200130113103
5433104010110212
621132135523351
72041211066062
oct327040342723
982450158864
1028865316307
111127279a413
125716b29557
13295028c629
14157b87c1d9
15b3e1e14a7
hex6b881c5d3

28865316307 has 8 divisors (see below), whose sum is σ = 28913766912. Its totient is φ = 28816907400.

The previous prime is 28865316299. The next prime is 28865316313. The reversal of 28865316307 is 70361356882.

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 28865316307 - 23 = 28865316299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28865316367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1569318 + ... + 1587604.

It is an arithmetic number, because the mean of its divisors is an integer number (3614220864).

Almost surely, 228865316307 is an apocalyptic number.

28865316307 is a deficient number, since it is larger than the sum of its proper divisors (48450605).

28865316307 is a wasteful number, since it uses less digits than its factorization.

28865316307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20849.

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 28865316307 in words is "twenty-eight billion, eight hundred sixty-five million, three hundred sixteen thousand, three hundred seven".

Divisors: 1 1031 1531 18287 1578461 18853897 27997397 28865316307