4422378 has 32 divisors (see below), whose sum is σ = 9231552. Its totient is φ = 1411200.

The previous prime is 4422361. The next prime is 4422391. The reversal of 4422378 is 8732244.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 15598 + ... + 15878.

It is an arithmetic number, because the mean of its divisors is an integer number (288486).

Almost surely, 2^4422378 is an apocalyptic number.

4422378 is an abundant number, since it is smaller than the sum of its proper divisors (4809174).

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

4422378 is a wasteful number, since it uses less digits than its factorization.

4422378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390.

The product of its digits is 10752, while the sum is 30.

The square root of 4422378 is about 2102.9450777422. The cubic root of 4422378 is about 164.1415840584.

It can be divided in two parts, 44 and 22378, that added together give a palindrome (22422).

The spelling of 4422378 in words is "four million, four hundred twenty-two thousand, three hundred seventy-eight".