20703808 has 28 divisors (see below), whose sum is σ = 41788080. Its totient is φ = 10174592.

The previous prime is 20703763. The next prime is 20703821. The reversal of 20703808 is 80830702.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1035 + ... + 6517.

Almost surely, 2^20703808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20703808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20894040).

20703808 is an abundant number, since it is smaller than the sum of its proper divisors (21084272).

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

20703808 is an equidigital number, since it uses as much as digits as its factorization.

20703808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5554 (or 5544 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 20703808 is about 4550.1437339935. The cubic root of 20703808 is about 274.5891738949.

The spelling of 20703808 in words is "twenty million, seven hundred three thousand, eight hundred eight".