2228078 has 4 divisors (see below), whose sum is σ = 3342120. Its totient is φ = 1114038.

The previous prime is 2228077. The next prime is 2228081. The reversal of 2228078 is 8708222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8708222 = 2 ⋅4354111.

It is a self number, because there is not a number n which added to its sum of digits gives 2228078.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2228077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557018 + ... + 557021.

It is an arithmetic number, because the mean of its divisors is an integer number (835530).

2^2228078 is an apocalyptic number.

2228078 is a deficient number, since it is larger than the sum of its proper divisors (1114042).

2228078 is a wasteful number, since it uses less digits than its factorization.

2228078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1114041.

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 2228078 is about 1492.6747803859. The cubic root of 2228078 is about 130.6101104798.

It can be divided in two parts, 22 and 28078, that multiplied together give a palindrome (617716).

The spelling of 2228078 in words is "two million, two hundred twenty-eight thousand, seventy-eight".