3220018 has 4 divisors (see below), whose sum is σ = 4830030. Its totient is φ = 1610008.

The previous prime is 3220003. The next prime is 3220027. The reversal of 3220018 is 8100223.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8100223 = 1093 ⋅7411.

It can be written as a sum of positive squares in only one way, i.e., 2111209 + 1108809 = 1453^2 + 1053^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3219983 and 3220010.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 805003 + ... + 805006.

Almost surely, 2^3220018 is an apocalyptic number.

3220018 is a deficient number, since it is larger than the sum of its proper divisors (1610012).

3220018 is a wasteful number, since it uses less digits than its factorization.

3220018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1610011.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 3220018 is about 1794.4408599895. The cubic root of 3220018 is about 147.6679003498.

The spelling of 3220018 in words is "three million, two hundred twenty thousand, eighteen".