13531072 has 28 divisors (see below), whose sum is σ = 27102816. Its totient is φ = 6702080.

The previous prime is 13531057. The next prime is 13531073. The reversal of 13531072 is 27013531.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13531073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6297 + ... + 8167.

Almost surely, 2^13531072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13531072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13551408).

13531072 is an abundant number, since it is smaller than the sum of its proper divisors (13571744).

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

13531072 is a wasteful number, since it uses less digits than its factorization.

13531072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1996 (or 1986 counting only the distinct ones).

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 13531072 is about 3678.4605475661. The cubic root of 13531072 is about 238.2926982847.

The spelling of 13531072 in words is "thirteen million, five hundred thirty-one thousand, seventy-two".