4128885 has 12 divisors (see below), whose sum is σ = 7156812. Its totient is φ = 2202048.

The previous prime is 4128877. The next prime is 4128889. The reversal of 4128885 is 5888214.

4128885 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1887876 + 2241009 = 1374^2 + 1497^2 .

It is not a de Polignac number, because 4128885 - 2³ = 4128877 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4128889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45832 + ... + 45921.

It is an arithmetic number, because the mean of its divisors is an integer number (596401).

Almost surely, 2^4128885 is an apocalyptic number.

4128885 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4128885 is a deficient number, since it is larger than the sum of its proper divisors (3027927).

4128885 is a wasteful number, since it uses less digits than its factorization.

4128885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91764 (or 91761 counting only the distinct ones).

The product of its digits is 20480, while the sum is 36.

The square root of 4128885 is about 2031.9657969562. The cubic root of 4128885 is about 160.4270492708.

The spelling of 4128885 in words is "four million, one hundred twenty-eight thousand, eight hundred eighty-five".