16131808 has 48 divisors (see below), whose sum is σ = 39602304. Its totient is φ = 6284160.

The previous prime is 16131803. The next prime is 16131823. The reversal of 16131808 is 80813161.

It is a happy number.

16131808 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16131803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 810 + ... + 5737.

It is an arithmetic number, because the mean of its divisors is an integer number (825048).

Almost surely, 2^16131808 is an apocalyptic number.

It is an amenable number.

16131808 is an abundant number, since it is smaller than the sum of its proper divisors (23470496).

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

16131808 is a wasteful number, since it uses less digits than its factorization.

16131808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6575 (or 6567 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 16131808 is about 4016.4422067297. The cubic root of 16131808 is about 252.6742671772.

Adding to 16131808 its reverse (80813161), we get a palindrome (96944969).

The spelling of 16131808 in words is "sixteen million, one hundred thirty-one thousand, eight hundred eight".