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107312728187 = 729577916177
BaseRepresentation
bin110001111110001010…
…1100100100001111011
3101020222210211102110102
41203330111210201323
53224234024300222
6121144312110015
710516211065520
oct1437425444173
9336883742412
10107312728187
1141569268015
121896a99530b
13a17284ba42
1452a0345147
152bd1228d92
hex18fc56487b

107312728187 has 16 divisors (see below), whose sum is σ = 127092212160. Its totient is φ = 88656519168.

The previous prime is 107312728153. The next prime is 107312728231. The reversal of 107312728187 is 781827213701.

It is a de Polignac number, because none of the positive numbers 2k-107312728187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (107312728087) 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, 340958 + ... + 575219.

It is an arithmetic number, because the mean of its divisors is an integer number (7943263260).

Almost surely, 2107312728187 is an apocalyptic number.

107312728187 is a deficient number, since it is larger than the sum of its proper divisors (19779483973).

107312728187 is an equidigital number, since it uses as much as digits as its factorization.

107312728187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 916790.

The product of its (nonzero) digits is 263424, while the sum is 47.

The spelling of 107312728187 in words is "one hundred seven billion, three hundred twelve million, seven hundred twenty-eight thousand, one hundred eighty-seven".

Divisors: 1 7 29 203 577 4039 16733 117131 916177 6413239 26569133 185983931 528634129 3700438903 15330389741 107312728187