120809808 has 60 divisors (see below), whose sum is σ = 386402848. Its totient is φ = 34516800.

The previous prime is 120809797. The next prime is 120809813. The reversal of 120809808 is 808908021.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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, 58918 + ... + 60933.

Almost surely, 2^120809808 is an apocalyptic number.

120809808 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

120809808 is an abundant number, since it is smaller than the sum of its proper divisors (265593040).

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

120809808 is a wasteful number, since it uses less digits than its factorization.

120809808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119872 (or 119863 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The square root of 120809808 is about 10991.3515092549. The cubic root of 120809808 is about 494.3494606962.

The spelling of 120809808 in words is "one hundred twenty million, eight hundred nine thousand, eight hundred eight".