4128784 has 20 divisors (see below), whose sum is σ = 8727120. Its totient is φ = 1876640.

The previous prime is 4128781. The next prime is 4128821. The reversal of 4128784 is 4878214.

It is not an unprimeable number, because it can be changed into a prime (4128781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11554 + ... + 11905.

It is an arithmetic number, because the mean of its divisors is an integer number (436356).

Almost surely, 2^4128784 is an apocalyptic number.

4128784 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

4128784 is an abundant number, since it is smaller than the sum of its proper divisors (4598336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4128784 is a wasteful number, since it uses less digits than its factorization.

4128784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23478 (or 23472 counting only the distinct ones).

The product of its digits is 14336, while the sum is 34.

The square root of 4128784 is about 2031.9409440237. The cubic root of 4128784 is about 160.4257411482.

The spelling of 4128784 in words is "four million, one hundred twenty-eight thousand, seven hundred eighty-four".