20835708 has 24 divisors (see below), whose sum is σ = 49803600. Its totient is φ = 6775680.

The previous prime is 20835707. The next prime is 20835719. The reversal of 20835708 is 80753802.

It is a super-2 number, since 2×20835708² = 868253455722528, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20835707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20683 + ... + 21666.

It is an arithmetic number, because the mean of its divisors is an integer number (2075150).

Almost surely, 2^20835708 is an apocalyptic number.

It is an amenable number.

20835708 is an abundant number, since it is smaller than the sum of its proper divisors (28967892).

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

20835708 is a wasteful number, since it uses less digits than its factorization.

20835708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42397 (or 42395 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 20835708 is about 4564.6147701641. The cubic root of 20835708 is about 275.1710583128.

The spelling of 20835708 in words is "twenty million, eight hundred thirty-five thousand, seven hundred eight".