13520450 has 24 divisors (see below), whose sum is σ = 25381188. Its totient is φ = 5358080.

The previous prime is 13520449. The next prime is 13520453. The reversal of 13520450 is 5402531.

It can be written as a sum of positive squares in 6 ways, for example, as 121 + 13520329 = 11^2 + 3677^2 .

It is not an unprimeable number, because it can be changed into a prime (13520453) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 4454 + ... + 6846.

Almost surely, 2^13520450 is an apocalyptic number.

13520450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13520450 is a deficient number, since it is larger than the sum of its proper divisors (11860738).

13520450 is a wasteful number, since it uses less digits than its factorization.

13520450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2518 (or 2513 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 13520450 is about 3677.0164535939. The cubic root of 13520450 is about 238.2303280686.

Adding to 13520450 its reverse (5402531), we get a palindrome (18922981).

The spelling of 13520450 in words is "thirteen million, five hundred twenty thousand, four hundred fifty".