128547 has 18 divisors (see below), whose sum is σ = 201292. Its totient is φ = 81972.

The previous prime is 128521. The next prime is 128549. The reversal of 128547 is 745821.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

128547 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 128547 - 2⁶ = 128483 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

128547 is strictly pandigital in base 7.

It is a plaindrome in base 14.

It is a nialpdrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 128547.

It is not an unprimeable number, because it can be changed into a prime (128549) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5578 + ... + 5600.

2¹²⁸⁵⁴⁷ is an apocalyptic number.

128547 is a deficient number, since it is larger than the sum of its proper divisors (72745).

128547 is an frugal number, since it uses more digits than its factorization.

128547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61 (or 26 counting only the distinct ones).

The product of its digits is 2240, while the sum is 27.

The square root of 128547 is about 358.5345171668. The cubic root of 128547 is about 50.4685292271.

Multiplying 128547 by its sum of digits (27), we get a square (3470769 = 1863²).

128547 divided by its sum of digits (27) gives a square (4761 = 69²).

The spelling of 128547 in words is "one hundred twenty-eight thousand, five hundred forty-seven".