7221470 has 8 divisors (see below), whose sum is σ = 12998664. Its totient is φ = 2888584.

The previous prime is 7221457. The next prime is 7221499. The reversal of 7221470 is 741227.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 361064 + ... + 361083.

It is an arithmetic number, because the mean of its divisors is an integer number (1624833).

Almost surely, 2^7221470 is an apocalyptic number.

7221470 is a deficient number, since it is larger than the sum of its proper divisors (5777194).

7221470 is a wasteful number, since it uses less digits than its factorization.

7221470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722154.

The product of its (nonzero) digits is 784, while the sum is 23.

The square root of 7221470 is about 2687.2792932630. The cubic root of 7221470 is about 193.2896221698.

Adding to 7221470 its reverse (741227), we get a palindrome (7962697).

The spelling of 7221470 in words is "seven million, two hundred twenty-one thousand, four hundred seventy".