13491984 has 120 divisors (see below), whose sum is σ = 40372416. Its totient is φ = 3872000.

The previous prime is 13491983. The next prime is 13491997. The reversal of 13491984 is 48919431.

It is not an unprimeable number, because it can be changed into a prime (13491983) 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 23 ways as a sum of consecutive naturals, for example, 133534 + ... + 133634.

Almost surely, 2^13491984 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 13491984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20186208).

13491984 is an abundant number, since it is smaller than the sum of its proper divisors (26880432).

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

13491984 is a wasteful number, since it uses less digits than its factorization.

13491984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157 (or 140 counting only the distinct ones).

The product of its digits is 31104, while the sum is 39.

The square root of 13491984 is about 3673.1436127655. The cubic root of 13491984 is about 238.0630202908.

It can be divided in two parts, 1349 and 1984, that added together give a palindrome (3333).

The spelling of 13491984 in words is "thirteen million, four hundred ninety-one thousand, nine hundred eighty-four".