13520736 has 48 divisors (see below), whose sum is σ = 39438000. Its totient is φ = 4506624.

The previous prime is 13520719. The next prime is 13520779. The reversal of 13520736 is 63702531.

It is a happy number.

13520736 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6961 + ... + 8688.

It is an arithmetic number, because the mean of its divisors is an integer number (821625).

Almost surely, 2^13520736 is an apocalyptic number.

13520736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13520736 is an abundant number, since it is smaller than the sum of its proper divisors (25917264).

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

13520736 is a wasteful number, since it uses less digits than its factorization.

13520736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15668 (or 15654 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 27.

The square root of 13520736 is about 3677.0553436140. The cubic root of 13520736 is about 238.2320078301.

The spelling of 13520736 in words is "thirteen million, five hundred twenty thousand, seven hundred thirty-six".