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28300365155 = 531732501137
BaseRepresentation
bin11010010110110101…
…010100110101100011
32201001022010111200102
4122112311110311203
5430424343141110
621000115013015
72021211064136
oct322665246543
981038114612
1028300365155
1111002900237
12559989a16b
132890215aca
14152681a21d
15b097e85a5
hex696d54d63

28300365155 has 16 divisors (see below), whose sum is σ = 35536168704. Its totient is φ = 21609815040.

The previous prime is 28300365143. The next prime is 28300365179. The reversal of 28300365155 is 55156300382.

It is not a de Polignac number, because 28300365155 - 218 = 28300103011 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1239254 + ... + 1261883.

It is an arithmetic number, because the mean of its divisors is an integer number (2221010544).

Almost surely, 228300365155 is an apocalyptic number.

28300365155 is a deficient number, since it is larger than the sum of its proper divisors (7235803549).

28300365155 is a wasteful number, since it uses less digits than its factorization.

28300365155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2501246.

The product of its (nonzero) digits is 108000, while the sum is 38.

The spelling of 28300365155 in words is "twenty-eight billion, three hundred million, three hundred sixty-five thousand, one hundred fifty-five".

Divisors: 1 5 31 73 155 365 2263 11315 2501137 12505685 77535247 182583001 387676235 912915005 5660073031 28300365155