12538645 has 16 divisors (see below), whose sum is σ = 17371008. Its totient is φ = 8510400.

The previous prime is 12538633. The next prime is 12538649. The reversal of 12538645 is 54683521.

12538645 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12538645 - 2⁷ = 12538517 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12538645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12538649) 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, 1762 + ... + 5308.

It is an arithmetic number, because the mean of its divisors is an integer number (1085688).

Almost surely, 2^12538645 is an apocalyptic number.

It is an amenable number.

12538645 is a deficient number, since it is larger than the sum of its proper divisors (4832363).

12538645 is a wasteful number, since it uses less digits than its factorization.

12538645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3660.

The product of its digits is 28800, while the sum is 34.

The square root of 12538645 is about 3540.9949166866. The cubic root of 12538645 is about 232.3183612356.

It can be divided in two parts, 1253 and 8645, that multiplied together give a triangular number (10832185 = T₄₆₅₄).

The spelling of 12538645 in words is "twelve million, five hundred thirty-eight thousand, six hundred forty-five".