20448208 has 40 divisors (see below), whose sum is σ = 43497216. Its totient is φ = 9235200.

The previous prime is 20448203. The next prime is 20448223. The reversal of 20448208 is 80284402.

It is a super-2 number, since 2×20448208² = 836258420822528, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20448203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38988 + ... + 39508.

Almost surely, 2^20448208 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 20448208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21748608).

20448208 is an abundant number, since it is smaller than the sum of its proper divisors (23049008).

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

20448208 is a wasteful number, since it uses less digits than its factorization.

20448208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763 (or 757 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 28.

The square root of 20448208 is about 4521.9694824269. The cubic root of 20448208 is about 273.4545063904.

The spelling of 20448208 in words is "twenty million, four hundred forty-eight thousand, two hundred eight".