13151808 has 140 divisors (see below), whose sum is σ = 40568880. Its totient is φ = 4209408.

The previous prime is 13151773. The next prime is 13151813. The reversal of 13151808 is 80815131.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 222883 + ... + 222941.

Almost surely, 2^13151808 is an apocalyptic number.

13151808 is a gapful number since it is divisible by the number (18) 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 13151808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20284440).

13151808 is an abundant number, since it is smaller than the sum of its proper divisors (27417072).

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

13151808 is an equidigital number, since it uses as much as digits as its factorization.

13151808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126 (or 107 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 27.

The square root of 13151808 is about 3626.5421547254. The cubic root of 13151808 is about 236.0451890868.

Adding to 13151808 its reverse (80815131), we get a palindrome (93966939).

The spelling of 13151808 in words is "thirteen million, one hundred fifty-one thousand, eight hundred eight".