13503216 has 20 divisors (see below), whose sum is σ = 34883432. Its totient is φ = 4501056.

The previous prime is 13503211. The next prime is 13503221. The reversal of 13503216 is 61230531.

It is an interprime number because it is at equal distance from previous prime (13503211) and next prime (13503221).

It is a junction number, because it is equal to n+sod(n) for n = 13503192 and 13503201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13503211) 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 3 ways as a sum of consecutive naturals, for example, 140611 + ... + 140706.

Almost surely, 2^13503216 is an apocalyptic number.

13503216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13503216 is an abundant number, since it is smaller than the sum of its proper divisors (21380216).

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

13503216 is a wasteful number, since it uses less digits than its factorization.

13503216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281328 (or 281322 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 13503216 is about 3674.6722302812. The cubic root of 13503216 is about 238.1290640043.

Adding to 13503216 its reverse (61230531), we get a palindrome (74733747).

The spelling of 13503216 in words is "thirteen million, five hundred three thousand, two hundred sixteen".