13618144 has 24 divisors (see below), whose sum is σ = 27268920. Its totient is φ = 6692736.

The previous prime is 13618123. The next prime is 13618147. The reversal of 13618144 is 44181631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13618147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1719 + ... + 5494.

It is an arithmetic number, because the mean of its divisors is an integer number (1136205).

Almost surely, 2^13618144 is an apocalyptic number.

It is an amenable number.

13618144 is an abundant number, since it is smaller than the sum of its proper divisors (13650776).

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

13618144 is an equidigital number, since it uses as much as digits as its factorization.

13618144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7282 (or 7274 counting only the distinct ones).

The product of its digits is 2304, while the sum is 28.

The square root of 13618144 is about 3690.2769543762. The cubic root of 13618144 is about 238.8027410142.

Adding to 13618144 its reverse (44181631), we get a palindrome (57799775).

The spelling of 13618144 in words is "thirteen million, six hundred eighteen thousand, one hundred forty-four".