107728905 has 16 divisors (see below), whose sum is σ = 172566144. Its totient is φ = 57388800.

The previous prime is 107728897. The next prime is 107728909. The reversal of 107728905 is 509827701.

It is not a de Polignac number, because 107728905 - 2³ = 107728897 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (107728909) 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, 10980 + ... + 18330.

It is an arithmetic number, because the mean of its divisors is an integer number (10785384).

Almost surely, 2^107728905 is an apocalyptic number.

107728905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

107728905 is a deficient number, since it is larger than the sum of its proper divisors (64837239).

107728905 is an equidigital number, since it uses as much as digits as its factorization.

107728905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8336.

The product of its (nonzero) digits is 35280, while the sum is 39.

The square root of 107728905 is about 10379.2535858799. The cubic root of 107728905 is about 475.8215220171.

The spelling of 107728905 in words is "one hundred seven million, seven hundred twenty-eight thousand, nine hundred five".