2220878 has 24 divisors (see below), whose sum is σ = 3824280. Its totient is φ = 958160.

The previous prime is 2220839. The next prime is 2220887. The reversal of 2220878 is 8780222.

2220878 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2220878.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37613 + ... + 37671.

It is an arithmetic number, because the mean of its divisors is an integer number (159345).

2^2220878 is an apocalyptic number.

2220878 is a deficient number, since it is larger than the sum of its proper divisors (1603402).

2220878 is a wasteful number, since it uses less digits than its factorization.

2220878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160 (or 101 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 2220878 is about 1490.2610509572. The cubic root of 2220878 is about 130.4692704713.

The spelling of 2220878 in words is "two million, two hundred twenty thousand, eight hundred seventy-eight".