20695808 has 36 divisors (see below), whose sum is σ = 47216400. Its totient is φ = 8868864.

The previous prime is 20695799. The next prime is 20695813. The reversal of 20695808 is 80859602.

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, 3983 + ... + 7566.

Almost surely, 2^20695808 is an apocalyptic number.

20695808 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20695808 is an abundant number, since it is smaller than the sum of its proper divisors (26520592).

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

20695808 is an equidigital number, since it uses as much as digits as its factorization.

20695808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11572 (or 11558 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 20695808 is about 4549.2645559475. The cubic root of 20695808 is about 274.5538020382.

The spelling of 20695808 in words is "twenty million, six hundred ninety-five thousand, eight hundred eight".