2194478 has 16 divisors (see below), whose sum is σ = 3867696. Its totient is φ = 920640.

The previous prime is 2194471. The next prime is 2194487. The reversal of 2194478 is 8744912.

2194478 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2194471) 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, 3551 + ... + 4122.

It is an arithmetic number, because the mean of its divisors is an integer number (241731).

2^2194478 is an apocalyptic number.

2194478 is a deficient number, since it is larger than the sum of its proper divisors (1673218).

2194478 is a wasteful number, since it uses less digits than its factorization.

2194478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7699.

The product of its digits is 16128, while the sum is 35.

The square root of 2194478 is about 1481.3770620608. The cubic root of 2194478 is about 129.9502373641.

It can be divided in two parts, 21944 and 78, that added together give a palindrome (22022).

The spelling of 2194478 in words is "two million, one hundred ninety-four thousand, four hundred seventy-eight".