7286221 has 8 divisors (see below), whose sum is σ = 7714080. Its totient is φ = 6870192.

The previous prime is 7286219. The next prime is 7286243. The reversal of 7286221 is 1226827.

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

It is a cyclic number.

It is not a de Polignac number, because 7286221 - 2¹ = 7286219 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7286221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7286261) 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, 1675 + ... + 4168.

It is an arithmetic number, because the mean of its divisors is an integer number (964260).

Almost surely, 2^7286221 is an apocalyptic number.

It is an amenable number.

7286221 is a deficient number, since it is larger than the sum of its proper divisors (427859).

7286221 is a wasteful number, since it uses less digits than its factorization.

7286221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5915.

The product of its digits is 2688, while the sum is 28.

The square root of 7286221 is about 2699.3000944689. The cubic root of 7286221 is about 193.8656117493.

The spelling of 7286221 in words is "seven million, two hundred eighty-six thousand, two hundred twenty-one".