2194420 has 12 divisors (see below), whose sum is σ = 4608324. Its totient is φ = 877760.

The previous prime is 2194417. The next prime is 2194421. The reversal of 2194420 is 244912.

It can be written as a sum of positive squares in 2 ways, for example, as 1373584 + 820836 = 1172^2 + 906^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2194391 and 2194400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2194421) 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, 54841 + ... + 54880.

It is an arithmetic number, because the mean of its divisors is an integer number (384027).

2^2194420 is an apocalyptic number.

2194420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2194420 is an abundant number, since it is smaller than the sum of its proper divisors (2413904).

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

2194420 is a wasteful number, since it uses less digits than its factorization.

2194420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109730 (or 109728 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 2194420 is about 1481.3574855517. The cubic root of 2194420 is about 129.9490924935.

The spelling of 2194420 in words is "two million, one hundred ninety-four thousand, four hundred twenty".