22244140 has 24 divisors (see below), whose sum is σ = 47853792. Its totient is φ = 8680320.

The previous prime is 22244129. The next prime is 22244147. The reversal of 22244140 is 4144222.

It is not an unprimeable number, because it can be changed into a prime (22244147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12744 + ... + 14383.

It is an arithmetic number, because the mean of its divisors is an integer number (1993908).

Almost surely, 2^22244140 is an apocalyptic number.

22244140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22244140 is an abundant number, since it is smaller than the sum of its proper divisors (25609652).

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

22244140 is a wasteful number, since it uses less digits than its factorization.

22244140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27177 (or 27175 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 22244140 is about 4716.3693663665. The cubic root of 22244140 is about 281.2366222444.

Adding to 22244140 its reverse (4144222), we get a palindrome (26388362).

The spelling of 22244140 in words is "twenty-two million, two hundred forty-four thousand, one hundred forty".