13491072 has 144 divisors (see below), whose sum is σ = 45349200. Its totient is φ = 3838464.

The previous prime is 13491029. The next prime is 13491073. The reversal of 13491072 is 27019431.

13491072 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 (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13491073) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 56329 + ... + 56567.

It is an arithmetic number, because the mean of its divisors is an integer number (314925).

Almost surely, 2^13491072 is an apocalyptic number.

13491072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13491072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22674600).

13491072 is an abundant number, since it is smaller than the sum of its proper divisors (31858128).

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

13491072 is a wasteful number, since it uses less digits than its factorization.

13491072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273 (or 251 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 13491072 is about 3673.0194663247. The cubic root of 13491072 is about 238.0576561584.

The spelling of 13491072 in words is "thirteen million, four hundred ninety-one thousand, seventy-two".