7213227 has 16 divisors (see below), whose sum is σ = 11032320. Its totient is φ = 4106592.

The previous prime is 7213223. The next prime is 7213229. The reversal of 7213227 is 7223127.

It is not a de Polignac number, because 7213227 - 2² = 7213223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7213197 and 7213206.

It is not an unprimeable number, because it can be changed into a prime (7213223) 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 in 15 ways as a sum of consecutive naturals, for example, 7728 + ... + 8610.

It is an arithmetic number, because the mean of its divisors is an integer number (689520).

Almost surely, 2^7213227 is an apocalyptic number.

7213227 is a deficient number, since it is larger than the sum of its proper divisors (3819093).

7213227 is a wasteful number, since it uses less digits than its factorization.

7213227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1282.

The product of its digits is 1176, while the sum is 24.

The square root of 7213227 is about 2685.7451479990. The cubic root of 7213227 is about 193.2160502164.

The spelling of 7213227 in words is "seven million, two hundred thirteen thousand, two hundred twenty-seven".