7210218 has 8 divisors (see below), whose sum is σ = 14420448. Its totient is φ = 2403404.

The previous prime is 7210207. The next prime is 7210237. The reversal of 7210218 is 8120127.

It is a sphenic number, since it is the product of 3 distinct primes.

7210218 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 7210194 and 7210203.

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 3 ways as a sum of consecutive naturals, for example, 600846 + ... + 600857.

It is an arithmetic number, because the mean of its divisors is an integer number (1802556).

Almost surely, 2^7210218 is an apocalyptic number.

7210218 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7210218 is a wasteful number, since it uses less digits than its factorization.

7210218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1201708.

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 7210218 is about 2685.1849098340. The cubic root of 7210218 is about 193.1891797669.

Subtracting 7210218 from its reverse (8120127), we obtain a palindrome (909909).

The spelling of 7210218 in words is "seven million, two hundred ten thousand, two hundred eighteen".