13591432 has 48 divisors (see below), whose sum is σ = 28111860. Its totient is φ = 6137856.

The previous prime is 13591427. The next prime is 13591439. The reversal of 13591432 is 23419531.

13591432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 13293316 + 298116 = 3646^2 + 546^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13591432.

It is not an unprimeable number, because it can be changed into a prime (13591439) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 186148 + ... + 186220.

Almost surely, 2^13591432 is an apocalyptic number.

It is an amenable number.

13591432 is an abundant number, since it is smaller than the sum of its proper divisors (14520428).

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

13591432 is a wasteful number, since it uses less digits than its factorization.

13591432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170 (or 129 counting only the distinct ones).

The product of its digits is 3240, while the sum is 28.

The square root of 13591432 is about 3686.6559372960. The cubic root of 13591432 is about 238.6465015612.

The spelling of 13591432 in words is "thirteen million, five hundred ninety-one thousand, four hundred thirty-two".