128547287 has 16 divisors (see below), whose sum is σ = 145183104. Its totient is φ = 112788000.

The previous prime is 128547281. The next prime is 128547301. The reversal of 128547287 is 782745821.

It is a cyclic number.

It is not a de Polignac number, because 128547287 - 2⁴ = 128547271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128547281) 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, 52112 + ... + 54522.

It is an arithmetic number, because the mean of its divisors is an integer number (9073944).

Almost surely, 2^128547287 is an apocalyptic number.

128547287 is a deficient number, since it is larger than the sum of its proper divisors (16635817).

128547287 is a wasteful number, since it uses less digits than its factorization.

128547287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2590.

The product of its digits is 250880, while the sum is 44.

The square root of 128547287 is about 11337.8695970628. The cubic root of 128547287 is about 504.6856678652.

The spelling of 128547287 in words is "one hundred twenty-eight million, five hundred forty-seven thousand, two hundred eighty-seven".