8216738 has 12 divisors (see below), whose sum is σ = 12671442. Its totient is φ = 3996000.

The previous prime is 8216737. The next prime is 8216743. The reversal of 8216738 is 8376128.

It can be written as a sum of positive squares in 3 ways, for example, as 8162449 + 54289 = 2857^2 + 233^2 .

It is a junction number, because it is equal to n+sod(n) for n = 8216698 and 8216707.

It is not an unprimeable number, because it can be changed into a prime (8216731) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 1238 + ... + 4238.

Almost surely, 2^8216738 is an apocalyptic number.

8216738 is a deficient number, since it is larger than the sum of its proper divisors (4454704).

8216738 is a wasteful number, since it uses less digits than its factorization.

8216738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3077 (or 3040 counting only the distinct ones).

The product of its digits is 16128, while the sum is 35.

The square root of 8216738 is about 2866.4853043405. The cubic root of 8216738 is about 201.7900802624.

The spelling of 8216738 in words is "eight million, two hundred sixteen thousand, seven hundred thirty-eight".