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28052755499 = 57199749277
BaseRepresentation
bin11010001000000100…
…110001010000101011
32200102001012122002102
4122020010301100223
5424423001133444
620515351524015
72012113326116
oct321004612053
980361178072
1028052755499
111099605a45a
12552a98960b
132850b2c412
1415019a357d
15ae2bd784e
hex68813142b

28052755499 has 8 divisors (see below), whose sum is σ = 28130641968. Its totient is φ = 27974970720.

The previous prime is 28052755487. The next prime is 28052755501. The reversal of 28052755499 is 99455725082.

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 28052755499 - 220 = 28051706923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28052755399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 544649 + ... + 593925.

It is an arithmetic number, because the mean of its divisors is an integer number (3516330246).

Almost surely, 228052755499 is an apocalyptic number.

28052755499 is a deficient number, since it is larger than the sum of its proper divisors (77886469).

28052755499 is an equidigital number, since it uses as much as digits as its factorization.

28052755499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50845.

The product of its (nonzero) digits is 9072000, while the sum is 56.

The spelling of 28052755499 in words is "twenty-eight billion, fifty-two million, seven hundred fifty-five thousand, four hundred ninety-nine".

Divisors: 1 571 997 49277 569287 28137167 49129169 28052755499