4128220 has 12 divisors (see below), whose sum is σ = 8669304. Its totient is φ = 1651280.

The previous prime is 4128217. The next prime is 4128233. The reversal of 4128220 is 228214.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103186 + ... + 103225.

It is an arithmetic number, because the mean of its divisors is an integer number (722442).

Almost surely, 2^4128220 is an apocalyptic number.

It is an amenable number.

4128220 is an abundant number, since it is smaller than the sum of its proper divisors (4541084).

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

4128220 is a wasteful number, since it uses less digits than its factorization.

4128220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206420 (or 206418 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 4128220 is about 2031.8021557228. The cubic root of 4128220 is about 160.4184359918.

The spelling of 4128220 in words is "four million, one hundred twenty-eight thousand, two hundred twenty".