12815493 has 16 divisors (see below), whose sum is σ = 18074112. Its totient is φ = 8064000.

The previous prime is 12815489. The next prime is 12815503. The reversal of 12815493 is 39451821.

It is not a de Polignac number, because 12815493 - 2² = 12815489 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12815423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2133 + ... + 5493.

It is an arithmetic number, because the mean of its divisors is an integer number (1129632).

Almost surely, 2^12815493 is an apocalyptic number.

It is an amenable number.

12815493 is a deficient number, since it is larger than the sum of its proper divisors (5258619).

12815493 is a wasteful number, since it uses less digits than its factorization.

12815493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3436.

The product of its digits is 8640, while the sum is 33.

The square root of 12815493 is about 3579.8733217811. The cubic root of 12815493 is about 234.0157597684.

The spelling of 12815493 in words is "twelve million, eight hundred fifteen thousand, four hundred ninety-three".