13491632 has 80 divisors (see below), whose sum is σ = 33426432. Its totient is φ = 5122560.

The previous prime is 13491629. The next prime is 13491677. The reversal of 13491632 is 23619431.

It is a junction number, because it is equal to n+sod(n) for n = 13491595 and 13491604.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57788 + ... + 58020.

Almost surely, 2^13491632 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 13491632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16713216).

13491632 is an abundant number, since it is smaller than the sum of its proper divisors (19934800).

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

13491632 is a wasteful number, since it uses less digits than its factorization.

13491632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306 (or 300 counting only the distinct ones).

The product of its digits is 3888, while the sum is 29.

The square root of 13491632 is about 3673.0956970926. The cubic root of 13491632 is about 238.0609499526.

The spelling of 13491632 in words is "thirteen million, four hundred ninety-one thousand, six hundred thirty-two".