13618332 has 72 divisors (see below), whose sum is σ = 42378336. Its totient is φ = 3590784.

The previous prime is 13618303. The next prime is 13618357. The reversal of 13618332 is 23381631.

It is a happy number.

13618332 is a `hidden beast` number, since 13 + 618 + 3 + 32 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 13618296 and 13618305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1198 + ... + 5354.

It is an arithmetic number, because the mean of its divisors is an integer number (588588).

Almost surely, 2^13618332 is an apocalyptic number.

13618332 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 13618332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21189168).

13618332 is an abundant number, since it is smaller than the sum of its proper divisors (28760004).

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

13618332 is a wasteful number, since it uses less digits than its factorization.

13618332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4187 (or 4182 counting only the distinct ones).

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

The square root of 13618332 is about 3690.3024266312. The cubic root of 13618332 is about 238.8038399086.

Adding to 13618332 its reverse (23381631), we get a palindrome (36999963).

The spelling of 13618332 in words is "thirteen million, six hundred eighteen thousand, three hundred thirty-two".