2194172 has 6 divisors (see below), whose sum is σ = 3839808. Its totient is φ = 1097084.

The previous prime is 2194133. The next prime is 2194187. The reversal of 2194172 is 2714912.

It is a congruent 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 as a sum of consecutive naturals, namely, 274268 + ... + 274275.

It is an arithmetic number, because the mean of its divisors is an integer number (639968).

2^2194172 is an apocalyptic number.

It is an amenable number.

2194172 is a deficient number, since it is larger than the sum of its proper divisors (1645636).

2194172 is a wasteful number, since it uses less digits than its factorization.

2194172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548547 (or 548545 counting only the distinct ones).

The product of its digits is 1008, while the sum is 26.

The square root of 2194172 is about 1481.2737761805. The cubic root of 2194172 is about 129.9441969570.

It can be divided in two parts, 219417 and 2, that multiplied together give a palindrome (438834).

The spelling of 2194172 in words is "two million, one hundred ninety-four thousand, one hundred seventy-two".