2219878 has 8 divisors (see below), whose sum is σ = 3342672. Its totient is φ = 1105656.

The previous prime is 2219869. The next prime is 2219881. The reversal of 2219878 is 8789122.

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

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 in 3 ways as a sum of consecutive naturals, for example, 1450 + ... + 2557.

It is an arithmetic number, because the mean of its divisors is an integer number (417834).

2^2219878 is an apocalyptic number.

2219878 is a deficient number, since it is larger than the sum of its proper divisors (1122794).

2219878 is a wasteful number, since it uses less digits than its factorization.

2219878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4286.

The product of its digits is 16128, while the sum is 37.

The square root of 2219878 is about 1489.9255014933. The cubic root of 2219878 is about 130.4496852956.

It can be divided in two parts, 22 and 19878, that added together give a triangular number (19900 = T₁₉₉).

The spelling of 2219878 in words is "two million, two hundred nineteen thousand, eight hundred seventy-eight".