2196878 has 4 divisors (see below), whose sum is σ = 3295320. Its totient is φ = 1098438.

The previous prime is 2196871. The next prime is 2196881. The reversal of 2196878 is 8786912.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2196871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 549218 + ... + 549221.

It is an arithmetic number, because the mean of its divisors is an integer number (823830).

2^2196878 is an apocalyptic number.

2196878 is a deficient number, since it is larger than the sum of its proper divisors (1098442).

2196878 is a wasteful number, since it uses less digits than its factorization.

2196878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1098441.

The product of its digits is 48384, while the sum is 41.

The square root of 2196878 is about 1482.1868977966. The cubic root of 2196878 is about 129.9975936438.

The spelling of 2196878 in words is "two million, one hundred ninety-six thousand, eight hundred seventy-eight".