13521448 has 16 divisors (see below), whose sum is σ = 25397460. Its totient is φ = 6748800.

The previous prime is 13521437. The next prime is 13521449. The reversal of 13521448 is 84412531.

It can be written as a sum of positive squares in 2 ways, for example, as 12517444 + 1004004 = 3538^2 + 1002^2 .

It is not an unprimeable number, because it can be changed into a prime (13521449) 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, 4978 + ... + 7198.

Almost surely, 2^13521448 is an apocalyptic number.

It is an amenable number.

13521448 is a deficient number, since it is larger than the sum of its proper divisors (11876012).

13521448 is a wasteful number, since it uses less digits than its factorization.

13521448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2988 (or 2984 counting only the distinct ones).

The product of its digits is 3840, while the sum is 28.

The square root of 13521448 is about 3677.1521589404. The cubic root of 13521448 is about 238.2361895110.

Adding to 13521448 its reverse (84412531), we get a palindrome (97933979).

The spelling of 13521448 in words is "thirteen million, five hundred twenty-one thousand, four hundred forty-eight".