22442028 has 24 divisors (see below), whose sum is σ = 59845632. Its totient is φ = 6411984.

The previous prime is 22441999. The next prime is 22442029. The reversal of 22442028 is 82024422.

It is a junction number, because it is equal to n+sod(n) for n = 22441989 and 22442007.

It is not an unprimeable number, because it can be changed into a prime (22442029) 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 7 ways as a sum of consecutive naturals, for example, 133500 + ... + 133667.

It is an arithmetic number, because the mean of its divisors is an integer number (2493568).

Almost surely, 2^22442028 is an apocalyptic number.

22442028 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

22442028 is an abundant number, since it is smaller than the sum of its proper divisors (37403604).

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

22442028 is a wasteful number, since it uses less digits than its factorization.

22442028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267181 (or 267179 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

The square root of 22442028 is about 4737.3017636625. The cubic root of 22442028 is about 282.0681390598.

The spelling of 22442028 in words is "twenty-two million, four hundred forty-two thousand, twenty-eight".