12791388 has 12 divisors (see below), whose sum is σ = 29846600. Its totient is φ = 4263792.

The previous prime is 12791353. The next prime is 12791393. The reversal of 12791388 is 88319721.

12791388 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 532963 + ... + 532986.

Almost surely, 2^12791388 is an apocalyptic number.

It is an amenable number.

12791388 is an abundant number, since it is smaller than the sum of its proper divisors (17055212).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12791388 is a wasteful number, since it uses less digits than its factorization.

12791388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1065956 (or 1065954 counting only the distinct ones).

The product of its digits is 24192, while the sum is 39.

The square root of 12791388 is about 3576.5049978995. The cubic root of 12791388 is about 233.8689455354.

The spelling of 12791388 in words is "twelve million, seven hundred ninety-one thousand, three hundred eighty-eight".