7931216 has 10 divisors (see below), whose sum is σ = 15366762. Its totient is φ = 3965600.

The previous prime is 7931207. The next prime is 7931233. The reversal of 7931216 is 6121397.

It can be written as a sum of positive squares in only one way, i.e., 5740816 + 2190400 = 2396^2 + 1480^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247835 + ... + 247866.

Almost surely, 2^7931216 is an apocalyptic number.

It is an amenable number.

7931216 is a deficient number, since it is larger than the sum of its proper divisors (7435546).

7931216 is a wasteful number, since it uses less digits than its factorization.

7931216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495709 (or 495703 counting only the distinct ones).

The product of its digits is 2268, while the sum is 29.

The square root of 7931216 is about 2816.2414669201. The cubic root of 7931216 is about 199.4251493165.

The spelling of 7931216 in words is "seven million, nine hundred thirty-one thousand, two hundred sixteen".