2229878 has 32 divisors (see below), whose sum is σ = 4112640. Its totient is φ = 885600.

The previous prime is 2229863. The next prime is 2229883. The reversal of 2229878 is 8789222.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a d-powerful number, because it can be written as 2² + 2⁸ + 2¹³ + 9⁴ + 8² + 7⁶ + 8⁷ .

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22028 + ... + 22128.

It is an arithmetic number, because the mean of its divisors is an integer number (128520).

2^2229878 is an apocalyptic number.

2229878 is a deficient number, since it is larger than the sum of its proper divisors (1882762).

2229878 is a wasteful number, since it uses less digits than its factorization.

2229878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212.

The product of its digits is 32256, while the sum is 38.

The square root of 2229878 is about 1493.2776031268. The cubic root of 2229878 is about 130.6452730605.

The spelling of 2229878 in words is "two million, two hundred twenty-nine thousand, eight hundred seventy-eight".