4422138 has 32 divisors (see below), whose sum is σ = 10176000. Its totient is φ = 1254960.

The previous prime is 4422127. The next prime is 4422139. The reversal of 4422138 is 8312244.

It is a nialpdrome in base 13.

It is a zygodrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (4422139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8613 + ... + 9111.

It is an arithmetic number, because the mean of its divisors is an integer number (318000).

Almost surely, 2^4422138 is an apocalyptic number.

4422138 is an abundant number, since it is smaller than the sum of its proper divisors (5753862).

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

4422138 is a wasteful number, since it uses less digits than its factorization.

4422138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722.

The product of its digits is 1536, while the sum is 24.

The square root of 4422138 is about 2102.8880141367. Note that the first 3 decimals coincide. The cubic root of 4422138 is about 164.1386147138.

It can be divided in two parts, 4422 and 138, that added together give a triangular number (4560 = T₉₅).

The spelling of 4422138 in words is "four million, four hundred twenty-two thousand, one hundred thirty-eight".