12815073 has 6 divisors (see below), whose sum is σ = 18510674. Its totient is φ = 8543376.

The previous prime is 12815053. The next prime is 12815081. The reversal of 12815073 is 37051821.

It can be written as a sum of positive squares in only one way, i.e., 12510369 + 304704 = 3537^2 + 552^2 .

It is not a de Polignac number, because 12815073 - 2⁵ = 12815041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12815053) 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, 711940 + ... + 711957.

Almost surely, 2^12815073 is an apocalyptic number.

It is an amenable number.

12815073 is a deficient number, since it is larger than the sum of its proper divisors (5695601).

12815073 is a wasteful number, since it uses less digits than its factorization.

12815073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1423903 (or 1423900 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 12815073 is about 3579.8146600069. The cubic root of 12815073 is about 234.0132032874.

Adding to 12815073 its reverse (37051821), we get a palindrome (49866894).

The spelling of 12815073 in words is "twelve million, eight hundred fifteen thousand, seventy-three".