2240218 has 4 divisors (see below), whose sum is σ = 3360330. Its totient is φ = 1120108.

The previous prime is 2240213. The next prime is 2240267. The reversal of 2240218 is 8120422.

2240218 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8120422 = 2 ⋅4060211.

It can be written as a sum of positive squares in only one way, i.e., 1682209 + 558009 = 1297^2 + 747^2 .

It is a super-4 number, since 4×2240218⁴ (a number of 27 digits) contains 4444 as substring.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 2240195 and 2240204.

It is not an unprimeable number, because it can be changed into a prime (2240213) 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 as a sum of consecutive naturals, namely, 560053 + ... + 560056.

2^2240218 is an apocalyptic number.

2240218 is a deficient number, since it is larger than the sum of its proper divisors (1120112).

2240218 is a wasteful number, since it uses less digits than its factorization.

2240218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1120111.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 2240218 is about 1496.7357816261. The cubic root of 2240218 is about 130.8468968678.

The spelling of 2240218 in words is "two million, two hundred forty thousand, two hundred eighteen".