13505712 has 40 divisors (see below), whose sum is σ = 38063040. Its totient is φ = 4092480.

The previous prime is 13505671. The next prime is 13505717. The reversal of 13505712 is 21750531.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (13505717) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12262 + ... + 13317.

It is an arithmetic number, because the mean of its divisors is an integer number (951576).

Almost surely, 2^13505712 is an apocalyptic number.

13505712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13505712 is an abundant number, since it is smaller than the sum of its proper divisors (24557328).

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

13505712 is a wasteful number, since it uses less digits than its factorization.

13505712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25601 (or 25595 counting only the distinct ones).

The product of its (nonzero) digits is 1050, while the sum is 24.

The square root of 13505712 is about 3675.0118367156. The cubic root of 13505712 is about 238.1437354111.

The spelling of 13505712 in words is "thirteen million, five hundred five thousand, seven hundred twelve".