12388545 has 60 divisors (see below), whose sum is σ = 24180156. Its totient is φ = 6065280.

The previous prime is 12388511. The next prime is 12388547. The reversal of 12388545 is 54588321.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 6395841 + 5992704 = 2529^2 + 2448^2 .

It is not a de Polignac number, because 12388545 - 2⁷ = 12388417 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12388547) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 68355 + ... + 68535.

Almost surely, 2^12388545 is an apocalyptic number.

12388545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12388545 is a deficient number, since it is larger than the sum of its proper divisors (11791611).

12388545 is a wasteful number, since it uses less digits than its factorization.

12388545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224 (or 202 counting only the distinct ones).

The product of its digits is 38400, while the sum is 36.

The square root of 12388545 is about 3519.7364958190. The cubic root of 12388545 is about 231.3876103285.

The spelling of 12388545 in words is "twelve million, three hundred eighty-eight thousand, five hundred forty-five".