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28765195495 = 513145796097
BaseRepresentation
bin11010110010100010…
…100000110011100111
32202020200210100000221
4122302202200303213
5432402342223440
621114201545211
72035554061501
oct326242406347
982220710027
1028765195495
1111221226143
1256a94a5207
132935605b4a
14156c458d71
15b35515d4a
hex6b28a0ce7

28765195495 has 16 divisors (see below), whose sum is σ = 34858204128. Its totient is φ = 22786283520.

The previous prime is 28765195471. The next prime is 28765195517. The reversal of 28765195495 is 59459156782.

It is not a de Polignac number, because 28765195495 - 25 = 28765195463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 251287 + ... + 347383.

It is an arithmetic number, because the mean of its divisors is an integer number (2178637758).

Almost surely, 228765195495 is an apocalyptic number.

28765195495 is a deficient number, since it is larger than the sum of its proper divisors (6093008633).

28765195495 is a wasteful number, since it uses less digits than its factorization.

28765195495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96690.

The product of its digits is 27216000, while the sum is 61.

The spelling of 28765195495 in words is "twenty-eight billion, seven hundred sixty-five million, one hundred ninety-five thousand, four hundred ninety-five".

Divisors: 1 5 131 457 655 2285 59867 96097 299335 480485 12588707 43916329 62943535 219581645 5753039099 28765195495