7216447 has 16 divisors (see below), whose sum is σ = 8985600. Its totient is φ = 5654880.

The previous prime is 7216439. The next prime is 7216453. The reversal of 7216447 is 7446127.

It is not a de Polignac number, because 7216447 - 2³ = 7216439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7216247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2922 + ... + 4792.

It is an arithmetic number, because the mean of its divisors is an integer number (561600).

Almost surely, 2^7216447 is an apocalyptic number.

7216447 is a deficient number, since it is larger than the sum of its proper divisors (1769153).

7216447 is a wasteful number, since it uses less digits than its factorization.

7216447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1926.

The product of its digits is 9408, while the sum is 31.

The square root of 7216447 is about 2686.3445423102. The cubic root of 7216447 is about 193.2447966257.

The spelling of 7216447 in words is "seven million, two hundred sixteen thousand, four hundred forty-seven".