7215316 has 12 divisors (see below), whose sum is σ = 13062420. Its totient is φ = 3483200.

The previous prime is 7215301. The next prime is 7215323. The reversal of 7215316 is 6135127.

It can be written as a sum of positive squares in 2 ways, for example, as 1971216 + 5244100 = 1404^2 + 2290^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30985 + ... + 31216.

It is an arithmetic number, because the mean of its divisors is an integer number (1088535).

Almost surely, 2^7215316 is an apocalyptic number.

It is an amenable number.

7215316 is a deficient number, since it is larger than the sum of its proper divisors (5847104).

7215316 is a wasteful number, since it uses less digits than its factorization.

7215316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62234 (or 62232 counting only the distinct ones).

The product of its digits is 1260, while the sum is 25.

The square root of 7215316 is about 2686.1340249511. The cubic root of 7215316 is about 193.2347006471.

The spelling of 7215316 in words is "seven million, two hundred fifteen thousand, three hundred sixteen".