20223808 has 56 divisors (see below), whose sum is σ = 45720000. Its totient is φ = 8785920.

The previous prime is 20223787. The next prime is 20223839. The reversal of 20223808 is 80832202.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15568 + ... + 16816.

Almost surely, 2^20223808 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 20223808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22860000).

20223808 is an abundant number, since it is smaller than the sum of its proper divisors (25496192).

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

20223808 is a wasteful number, since it uses less digits than its factorization.

20223808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1295 (or 1285 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 20223808 is about 4497.0888361250. The cubic root of 20223808 is about 272.4505221169.

The spelling of 20223808 in words is "twenty million, two hundred twenty-three thousand, eight hundred eight".