12591036 has 36 divisors (see below), whose sum is σ = 31947552. Its totient is φ = 4181184.

The previous prime is 12591031. The next prime is 12591041. The reversal of 12591036 is 63019521.

12591036 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12591031) and next prime (12591041).

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12591031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12736 + ... + 13688.

It is an arithmetic number, because the mean of its divisors is an integer number (887432).

Almost surely, 2^12591036 is an apocalyptic number.

It is an amenable number.

12591036 is an abundant number, since it is smaller than the sum of its proper divisors (19356516).

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

12591036 is a wasteful number, since it uses less digits than its factorization.

12591036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1330 (or 1325 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 12591036 is about 3548.3849847501. The cubic root of 12591036 is about 232.6414816989.

The spelling of 12591036 in words is "twelve million, five hundred ninety-one thousand, thirty-six".