12788413 has 4 divisors (see below), whose sum is σ = 13951008. Its totient is φ = 11625820.

The previous prime is 12788411. The next prime is 12788429. The reversal of 12788413 is 31488721.

It is a happy number.

12788413 is digitally balanced in base 2 and base 3, because in such bases 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: 31488721 = 11 ⋅2862611.

It is a cyclic number.

It is not a de Polignac number, because 12788413 - 2¹ = 12788411 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12788411) 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, 581281 + ... + 581302.

It is an arithmetic number, because the mean of its divisors is an integer number (3487752).

Almost surely, 2^12788413 is an apocalyptic number.

12788413 is the 1912-nd centered heptagonal number.

It is an amenable number.

12788413 is a deficient number, since it is larger than the sum of its proper divisors (1162595).

12788413 is a wasteful number, since it uses less digits than its factorization.

12788413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1162594.

The product of its digits is 10752, while the sum is 34.

The square root of 12788413 is about 3576.0890648864. The cubic root of 12788413 is about 233.8508131779.

The spelling of 12788413 in words is "twelve million, seven hundred eighty-eight thousand, four hundred thirteen".