2242278 has 24 divisors (see below), whose sum is σ = 4972968. Its totient is φ = 729792.

The previous prime is 2242277. The next prime is 2242291. The reversal of 2242278 is 8722422.

2242278 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2242277) 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 11 ways as a sum of consecutive naturals, for example, 675 + ... + 2222.

It is an arithmetic number, because the mean of its divisors is an integer number (207207).

2^2242278 is an apocalyptic number.

2242278 is an abundant number, since it is smaller than the sum of its proper divisors (2730690).

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

2242278 is a wasteful number, since it uses less digits than its factorization.

2242278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2948 (or 2945 counting only the distinct ones).

The product of its digits is 3584, while the sum is 27.

The square root of 2242278 is about 1497.4237877101. The cubic root of 2242278 is about 130.8869914820.

It can be divided in two parts, 22422 and 78, that added together give a square (22500 = 150²).

The spelling of 2242278 in words is "two million, two hundred forty-two thousand, two hundred seventy-eight".