2195578 has 32 divisors (see below), whose sum is σ = 4199040. Its totient is φ = 836160.

The previous prime is 2195563. The next prime is 2195579. The reversal of 2195578 is 8755912.

It is not an unprimeable number, because it can be changed into a prime (2195579) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8028 + ... + 8296.

It is an arithmetic number, because the mean of its divisors is an integer number (131220).

2^2195578 is an apocalyptic number.

2195578 is a deficient number, since it is larger than the sum of its proper divisors (2003462).

2195578 is a wasteful number, since it uses less digits than its factorization.

2195578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342.

The product of its digits is 25200, while the sum is 37.

The square root of 2195578 is about 1481.7482917149. The cubic root of 2195578 is about 129.9719466094.

Adding to 2195578 its product of digits (25200), we get a triangular number (2220778 = T₂₁₀₇).

The spelling of 2195578 in words is "two million, one hundred ninety-five thousand, five hundred seventy-eight".