13318224 has 40 divisors (see below), whose sum is σ = 35340000. Its totient is φ = 4318848.

The previous prime is 13318223. The next prime is 13318231. The reversal of 13318224 is 42281331.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 13318194 and 13318203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13318223) 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, 1974 + ... + 5525.

It is an arithmetic number, because the mean of its divisors is an integer number (883500).

Almost surely, 2^13318224 is an apocalyptic number.

It is an amenable number.

13318224 is an abundant number, since it is smaller than the sum of its proper divisors (22021776).

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

13318224 is a wasteful number, since it uses less digits than its factorization.

13318224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7547 (or 7541 counting only the distinct ones).

The product of its digits is 1152, while the sum is 24.

The square root of 13318224 is about 3649.4141995668. The cubic root of 13318224 is about 237.0366159667.

Adding to 13318224 its reverse (42281331), we get a palindrome (55599555).

The spelling of 13318224 in words is "thirteen million, three hundred eighteen thousand, two hundred twenty-four".