128784541 has 8 divisors (see below), whose sum is σ = 131453280. Its totient is φ = 126124752.

The previous prime is 128784529. The next prime is 128784547. The reversal of 128784541 is 145487821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128784541 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128784494 and 128784503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128784547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32190 + ... + 35968.

It is an arithmetic number, because the mean of its divisors is an integer number (16431660).

Almost surely, 2^128784541 is an apocalyptic number.

It is an amenable number.

128784541 is a deficient number, since it is larger than the sum of its proper divisors (2668739).

128784541 is an equidigital number, since it uses as much as digits as its factorization.

128784541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4475.

The product of its digits is 71680, while the sum is 40.

The square root of 128784541 is about 11348.3276741553. The cubic root of 128784541 is about 504.9959689905.

The spelling of 128784541 in words is "one hundred twenty-eight million, seven hundred eighty-four thousand, five hundred forty-one".