13811632 has 20 divisors (see below), whose sum is σ = 28169080. Its totient is φ = 6542208.

The previous prime is 13811621. The next prime is 13811639. The reversal of 13811632 is 23611831.

It is a super-2 number, since 2×13811632² = 381522357006848, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13811597 and 13811606.

It is not an unprimeable number, because it can be changed into a prime (13811639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22413 + ... + 23020.

It is an arithmetic number, because the mean of its divisors is an integer number (1408454).

Almost surely, 2^13811632 is an apocalyptic number.

It is an amenable number.

13811632 is an abundant number, since it is smaller than the sum of its proper divisors (14357448).

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

13811632 is a wasteful number, since it uses less digits than its factorization.

13811632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45460 (or 45454 counting only the distinct ones).

The product of its digits is 864, while the sum is 25.

The square root of 13811632 is about 3716.4004089979. The cubic root of 13811632 is about 239.9284045701.

The spelling of 13811632 in words is "thirteen million, eight hundred eleven thousand, six hundred thirty-two".