7205218 has 16 divisors (see below), whose sum is σ = 11473920. Its totient is φ = 3383856.

The previous prime is 7205213. The next prime is 7205243. The reversal of 7205218 is 8125027.

It is a junction number, because it is equal to n+sod(n) for n = 7205192 and 7205201.

It is not an unprimeable number, because it can be changed into a prime (7205213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4080 + ... + 5572.

It is an arithmetic number, because the mean of its divisors is an integer number (717120).

Almost surely, 2^7205218 is an apocalyptic number.

7205218 is a deficient number, since it is larger than the sum of its proper divisors (4268702).

7205218 is a wasteful number, since it uses less digits than its factorization.

7205218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1641.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 7205218 is about 2684.2537137909. The cubic root of 7205218 is about 193.1445130977.

The spelling of 7205218 in words is "seven million, two hundred five thousand, two hundred eighteen".