13645744 has 40 divisors (see below), whose sum is σ = 30647840. Its totient is φ = 5764608.

The previous prime is 13645727. The next prime is 13645757. The reversal of 13645744 is 44754631.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 7342 + ... + 9010.

It is an arithmetic number, because the mean of its divisors is an integer number (766196).

Almost surely, 2^13645744 is an apocalyptic number.

13645744 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13645744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15323920).

13645744 is an abundant number, since it is smaller than the sum of its proper divisors (17002096).

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

13645744 is a wasteful number, since it uses less digits than its factorization.

13645744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1757 (or 1751 counting only the distinct ones).

The product of its digits is 40320, while the sum is 34.

The square root of 13645744 is about 3694.0146182710. The cubic root of 13645744 is about 238.9639599490.

The spelling of 13645744 in words is "thirteen million, six hundred forty-five thousand, seven hundred forty-four".