2215378 has 8 divisors (see below), whose sum is σ = 3625200. Its totient is φ = 1006980.

The previous prime is 2215351. The next prime is 2215379. The reversal of 2215378 is 8735122.

2215378 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a d-powerful number, because it can be written as 2⁵ + 2²¹ + 1 + 5 + 3³ + 7⁶ + 8³ .

It is not an unprimeable number, because it can be changed into a prime (2215379) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 50328 + ... + 50371.

It is an arithmetic number, because the mean of its divisors is an integer number (453150).

2^2215378 is an apocalyptic number.

2215378 is a deficient number, since it is larger than the sum of its proper divisors (1409822).

2215378 is a wasteful number, since it uses less digits than its factorization.

2215378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100712.

The product of its digits is 3360, while the sum is 28.

The square root of 2215378 is about 1488.4145927798. The cubic root of 2215378 is about 130.3614791434.

It can be divided in two parts, 22 and 15378, that added together give a triangular number (15400 = T₁₇₅).

The spelling of 2215378 in words is "two million, two hundred fifteen thousand, three hundred seventy-eight".