4222128 has 20 divisors (see below), whose sum is σ = 10907288. Its totient is φ = 1407360.

The previous prime is 4222117. The next prime is 4222177. The reversal of 4222128 is 8212224.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43933 + ... + 44028.

Almost surely, 2^4222128 is an apocalyptic number.

4222128 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

4222128 is an abundant number, since it is smaller than the sum of its proper divisors (6685160).

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

4222128 is a wasteful number, since it uses less digits than its factorization.

4222128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87972 (or 87966 counting only the distinct ones).

The product of its digits is 512, while the sum is 21.

The square root of 4222128 is about 2054.7817402342. The cubic root of 4222128 is about 161.6257172416.

The spelling of 4222128 in words is "four million, two hundred twenty-two thousand, one hundred twenty-eight".