12788493 has 4 divisors (see below), whose sum is σ = 17051328. Its totient is φ = 8525660.

The previous prime is 12788473. The next prime is 12788497. The reversal of 12788493 is 39488721.

12788493 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39488721 = 3 ⋅13162907.

It is a cyclic number.

It is not a de Polignac number, because 12788493 - 2⁶ = 12788429 is a prime.

It is a super-2 number, since 2×12788493² = 327091106422098, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12788497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2131413 + ... + 2131418.

It is an arithmetic number, because the mean of its divisors is an integer number (4262832).

Almost surely, 2^12788493 is an apocalyptic number.

It is an amenable number.

12788493 is a deficient number, since it is larger than the sum of its proper divisors (4262835).

12788493 is an equidigital number, since it uses as much as digits as its factorization.

12788493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4262834.

The product of its digits is 96768, while the sum is 42.

The square root of 12788493 is about 3576.1002502726. The cubic root of 12788493 is about 233.8513008075.

The spelling of 12788493 in words is "twelve million, seven hundred eighty-eight thousand, four hundred ninety-three".