128327755 has 16 divisors (see below), whose sum is σ = 164448000. Its totient is φ = 95921280.

The previous prime is 128327753. The next prime is 128327791. The reversal of 128327755 is 557723821.

It is a happy number.

It is not a de Polignac number, because 128327755 - 2¹ = 128327753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128327753) 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, 9780 + ... + 18769.

It is an arithmetic number, because the mean of its divisors is an integer number (10278000).

Almost surely, 2^128327755 is an apocalyptic number.

128327755 is a deficient number, since it is larger than the sum of its proper divisors (36120245).

128327755 is a wasteful number, since it uses less digits than its factorization.

128327755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28614.

The product of its digits is 117600, while the sum is 40.

The square root of 128327755 is about 11328.1840998458. The cubic root of 128327755 is about 504.3982048158.

The spelling of 128327755 in words is "one hundred twenty-eight million, three hundred twenty-seven thousand, seven hundred fifty-five".