7298221 has 8 divisors (see below), whose sum is σ = 8369984. Its totient is φ = 6233760.

The previous prime is 7298209. The next prime is 7298231. The reversal of 7298221 is 1228927.

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 7298221 - 2²¹ = 5201069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7298201) 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, 526 + ... + 3856.

It is an arithmetic number, because the mean of its divisors is an integer number (1046248).

Almost surely, 2^7298221 is an apocalyptic number.

It is an amenable number.

7298221 is a deficient number, since it is larger than the sum of its proper divisors (1071763).

7298221 is a wasteful number, since it uses less digits than its factorization.

7298221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3651.

The product of its digits is 4032, while the sum is 31.

The square root of 7298221 is about 2701.5219784410. The cubic root of 7298221 is about 193.9719819955.

The spelling of 7298221 in words is "seven million, two hundred ninety-eight thousand, two hundred twenty-one".