13245138 has 24 divisors (see below), whose sum is σ = 28770768. Its totient is φ = 4403832.

The previous prime is 13245137. The next prime is 13245151. The reversal of 13245138 is 83154231.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (13245137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9481 + ... + 10787.

It is an arithmetic number, because the mean of its divisors is an integer number (1198782).

Almost surely, 2^13245138 is an apocalyptic number.

13245138 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13245138 is an abundant number, since it is smaller than the sum of its proper divisors (15525630).

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

13245138 is a wasteful number, since it uses less digits than its factorization.

13245138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1878 (or 1875 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 13245138 is about 3639.3870363016. The cubic root of 13245138 is about 236.6022276016.

Adding to 13245138 its reverse (83154231), we get a palindrome (96399369).

The spelling of 13245138 in words is "thirteen million, two hundred forty-five thousand, one hundred thirty-eight".