13505532 has 36 divisors (see below), whose sum is σ = 32765880. Its totient is φ = 4324544.

The previous prime is 13505521. The next prime is 13505537. The reversal of 13505532 is 23550531.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13505537) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68458 + ... + 68654.

Almost surely, 2^13505532 is an apocalyptic number.

13505532 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 13505532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16382940).

13505532 is an abundant number, since it is smaller than the sum of its proper divisors (19260348).

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

13505532 is a wasteful number, since it uses less digits than its factorization.

13505532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430 (or 231 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 24.

The square root of 13505532 is about 3674.9873469170. The cubic root of 13505532 is about 238.1426774375.

The spelling of 13505532 in words is "thirteen million, five hundred five thousand, five hundred thirty-two".