20107808 has 24 divisors (see below), whose sum is σ = 45243072. Its totient is φ = 8617536.

The previous prime is 20107807. The next prime is 20107811. The reversal of 20107808 is 80870102.

It is not an unprimeable number, because it can be changed into a prime (20107807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44660 + ... + 45107.

It is an arithmetic number, because the mean of its divisors is an integer number (1885128).

Almost surely, 2^20107808 is an apocalyptic number.

20107808 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20107808 is an abundant number, since it is smaller than the sum of its proper divisors (25135264).

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

20107808 is an equidigital number, since it uses as much as digits as its factorization.

20107808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89784 (or 89776 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 26.

The square root of 20107808 is about 4484.1730564286. The cubic root of 20107808 is about 271.9286144847.

The spelling of 20107808 in words is "twenty million, one hundred seven thousand, eight hundred eight".