13505232 has 80 divisors (see below), whose sum is σ = 39247488. Its totient is φ = 3970560.

The previous prime is 13505227. The next prime is 13505263. The reversal of 13505232 is 23250531.

It is a junction number, because it is equal to n+sod(n) for n = 13505199 and 13505208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13882 + ... + 14822.

Almost surely, 2^13505232 is an apocalyptic number.

13505232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13505232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19623744).

13505232 is an abundant number, since it is smaller than the sum of its proper divisors (25742256).

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

13505232 is a wasteful number, since it uses less digits than its factorization.

13505232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988 (or 982 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 13505232 is about 3674.9465302233. The cubic root of 13505232 is about 238.1409141271.

Adding to 13505232 its reverse (23250531), we get a palindrome (36755763).

The spelling of 13505232 in words is "thirteen million, five hundred five thousand, two hundred thirty-two".