8320538 has 4 divisors (see below), whose sum is σ = 12480810. Its totient is φ = 4160268.

The previous prime is 8320519. The next prime is 8320541. The reversal of 8320538 is 8350238.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 4721929 + 3598609 = 2173^2 + 1897^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 8320538.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2080133 + ... + 2080136.

Almost surely, 2^8320538 is an apocalyptic number.

8320538 is a deficient number, since it is larger than the sum of its proper divisors (4160272).

8320538 is a wasteful number, since it uses less digits than its factorization.

8320538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4160271.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 8320538 is about 2884.5342778341. The cubic root of 8320538 is about 202.6362482962.

The spelling of 8320538 in words is "eight million, three hundred twenty thousand, five hundred thirty-eight".