2214378 has 20 divisors (see below), whose sum is σ = 4962210. Its totient is φ = 738072.

The previous prime is 2214367. The next prime is 2214379. The reversal of 2214378 is 8734122.

2214378 is a `hidden beast` number, since 221 + 437 + 8 = 666.

2214378 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1656369 + 558009 = 1287^2 + 747^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (2214379) 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 9 ways as a sum of consecutive naturals, for example, 6673 + ... + 6996.

2^2214378 is an apocalyptic number.

2214378 is an abundant number, since it is smaller than the sum of its proper divisors (2747832).

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

2214378 is a wasteful number, since it uses less digits than its factorization.

2214378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13683 (or 13674 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 2214378 is about 1488.0786269549. The cubic root of 2214378 is about 130.3418615584.

It can be divided in two parts, 221437 and 8, that added together give a triangular number (221445 = T₆₆₅).

The spelling of 2214378 in words is "two million, two hundred fourteen thousand, three hundred seventy-eight".