13500224 has 28 divisors (see below), whose sum is σ = 27175968. Its totient is φ = 6652800.

The previous prime is 13500211. The next prime is 13500259. The reversal of 13500224 is 42200531.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3059 + ... + 6029.

Almost surely, 2^13500224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13500224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13587984).

13500224 is an abundant number, since it is smaller than the sum of its proper divisors (13675744).

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

13500224 is an equidigital number, since it uses as much as digits as its factorization.

13500224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3054 (or 3044 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 13500224 is about 3674.2650965873. The cubic root of 13500224 is about 238.1114747429. Note that the first 3 decimals are identical.

Adding to 13500224 its reverse (42200531), we get a palindrome (55700755).

The spelling of 13500224 in words is "thirteen million, five hundred thousand, two hundred twenty-four".