2040218 has 4 divisors (see below), whose sum is σ = 3060330. Its totient is φ = 1020108.

The previous prime is 2040211. The next prime is 2040229. The reversal of 2040218 is 8120402.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1026169 + 1014049 = 1013^2 + 1007^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2040196 and 2040205.

It is not an unprimeable number, because it can be changed into a prime (2040211) 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, 510053 + ... + 510056.

2^2040218 is an apocalyptic number.

2040218 is a deficient number, since it is larger than the sum of its proper divisors (1020112).

2040218 is a wasteful number, since it uses less digits than its factorization.

2040218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020111.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 2040218 is about 1428.3619989344. The cubic root of 2040218 is about 126.8310316233.

It can be divided in two parts, 20402 and 18, that multiplied together give a square (367236 = 606²).

The spelling of 2040218 in words is "two million, forty thousand, two hundred eighteen".