2163378 has 32 divisors (see below), whose sum is σ = 5207040. Its totient is φ = 585360.

The previous prime is 2163361. The next prime is 2163401. The reversal of 2163378 is 8733612.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 558 + ... + 2153.

It is an arithmetic number, because the mean of its divisors is an integer number (162720).

2^2163378 is an apocalyptic number.

2163378 is an abundant number, since it is smaller than the sum of its proper divisors (3043662).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2163378 is a wasteful number, since it uses less digits than its factorization.

2163378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2742.

The product of its digits is 6048, while the sum is 30.

The square root of 2163378 is about 1470.8426156459. The cubic root of 2163378 is about 129.3334322338. Note that the first 3 decimals are identical.

The spelling of 2163378 in words is "two million, one hundred sixty-three thousand, three hundred seventy-eight".