128088547 has 4 divisors (see below), whose sum is σ = 128111776. Its totient is φ = 128065320.

The previous prime is 128088509. The next prime is 128088581. The reversal of 128088547 is 745880821.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 128088547 - 2¹⁹ = 127564259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128068547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1897 + ... + 16117.

It is an arithmetic number, because the mean of its divisors is an integer number (32027944).

Almost surely, 2^128088547 is an apocalyptic number.

128088547 is a deficient number, since it is larger than the sum of its proper divisors (23229).

128088547 is an equidigital number, since it uses as much as digits as its factorization.

128088547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23228.

The product of its (nonzero) digits is 143360, while the sum is 43.

The square root of 128088547 is about 11317.6210839558. The cubic root of 128088547 is about 504.0846038265.

The spelling of 128088547 in words is "one hundred twenty-eight million, eighty-eight thousand, five hundred forty-seven".