13318632 has 48 divisors (see below), whose sum is σ = 36412740. Its totient is φ = 4397568.

The previous prime is 13318619. The next prime is 13318649. The reversal of 13318632 is 23681331.

It is a happy number.

13318632 is a `hidden beast` number, since 13 + 3 + 18 + 632 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 8678916 + 4639716 = 2946^2 + 2154^2 .

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 13318596 and 13318605.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 7318 + ... + 8954.

Almost surely, 2^13318632 is an apocalyptic number.

13318632 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 13318632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18206370).

13318632 is an abundant number, since it is smaller than the sum of its proper divisors (23094108).

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

13318632 is a wasteful number, since it uses less digits than its factorization.

13318632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1762 (or 1755 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 13318632 is about 3649.4700985212. The cubic root of 13318632 is about 237.0390364583.

Adding to 13318632 its reverse (23681331), we get a palindrome (36999963).

The spelling of 13318632 in words is "thirteen million, three hundred eighteen thousand, six hundred thirty-two".