4422778 has 8 divisors (see below), whose sum is σ = 6725268. Its totient is φ = 2181024.

The previous prime is 4422773. The next prime is 4422787. The reversal of 4422778 is 8772244.

It can be written as a sum of positive squares in 2 ways, for example, as 4422609 + 169 = 2103^2 + 13^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (4422773) 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 3 ways as a sum of consecutive naturals, for example, 15001 + ... + 15292.

Almost surely, 2^4422778 is an apocalyptic number.

4422778 is a deficient number, since it is larger than the sum of its proper divisors (2302490).

4422778 is a wasteful number, since it uses less digits than its factorization.

4422778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30368.

The product of its digits is 25088, while the sum is 34.

The square root of 4422778 is about 2103.0401803104. The cubic root of 4422778 is about 164.1465327274.

It can be divided in two parts, 44 and 22778, that added together give a palindrome (22822).

The spelling of 4422778 in words is "four million, four hundred twenty-two thousand, seven hundred seventy-eight".