2196578 has 8 divisors (see below), whose sum is σ = 3327168. Its totient is φ = 1087524.

The previous prime is 2196563. The next prime is 2196583. The reversal of 2196578 is 8756912.

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

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5126 + ... + 5537.

It is an arithmetic number, because the mean of its divisors is an integer number (415896).

2^2196578 is an apocalyptic number.

2196578 is a deficient number, since it is larger than the sum of its proper divisors (1130590).

2196578 is a wasteful number, since it uses less digits than its factorization.

2196578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10768.

The product of its digits is 30240, while the sum is 38.

The square root of 2196578 is about 1482.0856925293. The cubic root of 2196578 is about 129.9916759956.

The spelling of 2196578 in words is "two million, one hundred ninety-six thousand, five hundred seventy-eight".