2216878 has 8 divisors (see below), whose sum is σ = 3469968. Its totient is φ = 1060224.

The previous prime is 2216873. The next prime is 2216887. The reversal of 2216878 is 8786122.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2216873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24051 + ... + 24142.

It is an arithmetic number, because the mean of its divisors is an integer number (433746).

2^2216878 is an apocalyptic number.

2216878 is a deficient number, since it is larger than the sum of its proper divisors (1253090).

2216878 is a wasteful number, since it uses less digits than its factorization.

2216878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48218.

The product of its digits is 10752, while the sum is 34.

The square root of 2216878 is about 1488.9183993759. The cubic root of 2216878 is about 130.3908944550.

It can be divided in two parts, 22 and 16878, that added together give a square (16900 = 130²).

The spelling of 2216878 in words is "two million, two hundred sixteen thousand, eight hundred seventy-eight".