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115728672189 = 31318691158761
BaseRepresentation
bin110101111000111110…
…1110110010110111101
3102001201022220200021010
41223301331312112331
53344003020002224
6125055351025433
711234602324434
oct1536175662675
9361638820233
10115728672189
1145097900339
121a51936b279
13abb42c6670
14585bd6411b
153024ed6e29
hex1af1f765bd

115728672189 has 16 divisors (see below), whose sum is σ = 166184441024. Its totient is φ = 71213385600.

The previous prime is 115728672173. The next prime is 115728672197. The reversal of 115728672189 is 981276827511.

It is a happy number.

It is not a de Polignac number, because 115728672189 - 24 = 115728672173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115728672089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 649569 + ... + 808329.

It is an arithmetic number, because the mean of its divisors is an integer number (10386527564).

Almost surely, 2115728672189 is an apocalyptic number.

It is an amenable number.

115728672189 is a deficient number, since it is larger than the sum of its proper divisors (50455768835).

115728672189 is a wasteful number, since it uses less digits than its factorization.

115728672189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177468.

The product of its digits is 3386880, while the sum is 57.

The spelling of 115728672189 in words is "one hundred fifteen billion, seven hundred twenty-eight million, six hundred seventy-two thousand, one hundred eighty-nine".

Divisors: 1 3 13 39 18691 56073 158761 242983 476283 728949 2063893 6191679 2967401851 8902205553 38576224063 115728672189