13709528 has 16 divisors (see below), whose sum is σ = 29377680. Its totient is φ = 5875488.

The previous prime is 13709513. The next prime is 13709551. The reversal of 13709528 is 82590731.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122351 + ... + 122462.

It is an arithmetic number, because the mean of its divisors is an integer number (1836105).

Almost surely, 2^13709528 is an apocalyptic number.

It is an amenable number.

13709528 is an abundant number, since it is smaller than the sum of its proper divisors (15668152).

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

13709528 is a wasteful number, since it uses less digits than its factorization.

13709528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244826 (or 244822 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 13709528 is about 3702.6379785229. The cubic root of 13709528 is about 239.3357093172.

The spelling of 13709528 in words is "thirteen million, seven hundred nine thousand, five hundred twenty-eight".