16135808 has 32 divisors (see below), whose sum is σ = 34621860. Its totient is φ = 7446528.

The previous prime is 16135799. The next prime is 16135813. The reversal of 16135808 is 80853161.

It can be written as a sum of positive squares in 2 ways, for example, as 13601344 + 2534464 = 3688^2 + 1592^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a nialpdrome in base 8.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3185 + ... + 6512.

Almost surely, 2^16135808 is an apocalyptic number.

It is an amenable number.

16135808 is an abundant number, since it is smaller than the sum of its proper divisors (18486052).

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

16135808 is an equidigital number, since it uses as much as digits as its factorization.

16135808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9724 (or 9712 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 16135808 is about 4016.9401290037. The cubic root of 16135808 is about 252.6951495967.

Adding to 16135808 its reverse (80853161), we get a palindrome (96988969).

The spelling of 16135808 in words is "sixteen million, one hundred thirty-five thousand, eight hundred eight".