13523520 has 56 divisors (see below), whose sum is σ = 42940224. Its totient is φ = 3606016.

The previous prime is 13523513. The next prime is 13523539. The reversal of 13523520 is 2532531.

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, 6084 + ... + 8003.

Almost surely, 2^13523520 is an apocalyptic number.

13523520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13523520 is an abundant number, since it is smaller than the sum of its proper divisors (29416704).

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

13523520 is a wasteful number, since it uses less digits than its factorization.

13523520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14107 (or 14097 counting only the distinct ones).

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

The square root of 13523520 is about 3677.4338879170. The cubic root of 13523520 is about 238.2483578373.

The spelling of 13523520 in words is "thirteen million, five hundred twenty-three thousand, five hundred twenty".