7218230 has 16 divisors (see below), whose sum is σ = 13158720. Its totient is φ = 2850432.

The previous prime is 7218227. The next prime is 7218247. The reversal of 7218230 is 328127.

It is a junction number, because it is equal to n+sod(n) for n = 7218196 and 7218205.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3779 + ... + 5358.

It is an arithmetic number, because the mean of its divisors is an integer number (822420).

Almost surely, 2^7218230 is an apocalyptic number.

7218230 is a deficient number, since it is larger than the sum of its proper divisors (5940490).

7218230 is a wasteful number, since it uses less digits than its factorization.

7218230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9223.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 7218230 is about 2686.6763854249. The cubic root of 7218230 is about 193.2607106020.

The spelling of 7218230 in words is "seven million, two hundred eighteen thousand, two hundred thirty".