22424140 has 24 divisors (see below), whose sum is σ = 47738880. Its totient is φ = 8846208.

The previous prime is 22424137. The next prime is 22424147. The reversal of 22424140 is 4142422.

It is not an unprimeable number, because it can be changed into a prime (22424147) 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, 6220 + ... + 9139.

It is an arithmetic number, because the mean of its divisors is an integer number (1989120).

Almost surely, 2^22424140 is an apocalyptic number.

22424140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22424140 is an abundant number, since it is smaller than the sum of its proper divisors (25314740).

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

22424140 is a wasteful number, since it uses less digits than its factorization.

22424140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15441 (or 15439 counting only the distinct ones).

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

The square root of 22424140 is about 4735.4133927251. The cubic root of 22424140 is about 281.9931758991.

Adding to 22424140 its reverse (4142422), we get a palindrome (26566562).

The spelling of 22424140 in words is "twenty-two million, four hundred twenty-four thousand, one hundred forty".