8440224 has 48 divisors (see below), whose sum is σ = 23863392. Its totient is φ = 2596608.

The previous prime is 8440207. The next prime is 8440231. The reversal of 8440224 is 4220448.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 8440194 and 8440203.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2134 + ... + 4629.

It is an arithmetic number, because the mean of its divisors is an integer number (497154).

Almost surely, 2^8440224 is an apocalyptic number.

It is an amenable number.

8440224 is an abundant number, since it is smaller than the sum of its proper divisors (15423168).

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

8440224 is a wasteful number, since it uses less digits than its factorization.

8440224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6789 (or 6781 counting only the distinct ones).

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

The square root of 8440224 is about 2905.2063610009. The cubic root of 8440224 is about 203.6032272536.

The spelling of 8440224 in words is "eight million, four hundred forty thousand, two hundred twenty-four".