7228866 has 16 divisors (see below), whose sum is σ = 14695488. Its totient is φ = 2370000.

The previous prime is 7228861. The next prime is 7228867. The reversal of 7228866 is 6688227.

7228866 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (7228861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9510 + ... + 10241.

It is an arithmetic number, because the mean of its divisors is an integer number (918468).

Almost surely, 2^7228866 is an apocalyptic number.

7228866 is an abundant number, since it is smaller than the sum of its proper divisors (7466622).

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

7228866 is a wasteful number, since it uses less digits than its factorization.

7228866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19817.

The product of its digits is 64512, while the sum is 39.

The square root of 7228866 is about 2688.6550541116. The cubic root of 7228866 is about 193.3555866841.

The spelling of 7228866 in words is "seven million, two hundred twenty-eight thousand, eight hundred sixty-six".