24222440 has 32 divisors (see below), whose sum is σ = 59456160. Its totient is φ = 8808000.

The previous prime is 24222413. The next prime is 24222449. The reversal of 24222440 is 4422242.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (24222449) 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, 27086 + ... + 27965.

It is an arithmetic number, because the mean of its divisors is an integer number (1858005).

Almost surely, 2^24222440 is an apocalyptic number.

24222440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

24222440 is an abundant number, since it is smaller than the sum of its proper divisors (35233720).

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

24222440 is a wasteful number, since it uses less digits than its factorization.

24222440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55073 (or 55069 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 24222440 is about 4921.6298113531. The cubic root of 24222440 is about 289.3383249768.

Adding to 24222440 its reverse (4422242), we get a palindrome (28644682).

The spelling of 24222440 in words is "twenty-four million, two hundred twenty-two thousand, four hundred forty".