13145244 has 24 divisors (see below), whose sum is σ = 35054208. Its totient is φ = 3755760.

The previous prime is 13145243. The next prime is 13145257. The reversal of 13145244 is 44254131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13145243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78162 + ... + 78329.

It is an arithmetic number, because the mean of its divisors is an integer number (1460592).

Almost surely, 2^13145244 is an apocalyptic number.

13145244 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13145244 is an abundant number, since it is smaller than the sum of its proper divisors (21908964).

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

13145244 is a wasteful number, since it uses less digits than its factorization.

13145244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156505 (or 156503 counting only the distinct ones).

The product of its digits is 1920, while the sum is 24.

The square root of 13145244 is about 3625.6370474718. The cubic root of 13145244 is about 236.0059129037.

Adding to 13145244 its reverse (44254131), we get a palindrome (57399375).

The spelling of 13145244 in words is "thirteen million, one hundred forty-five thousand, two hundred forty-four".