20568448 has 64 divisors (see below), whose sum is σ = 43488720. Its totient is φ = 9676800.

The previous prime is 20568421. The next prime is 20568451. The reversal of 20568448 is 84486502.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×20568448² = 846122106257408, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 203598 + ... + 203698.

Almost surely, 2^20568448 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 20568448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21744360).

20568448 is an abundant number, since it is smaller than the sum of its proper divisors (22920272).

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

20568448 is a wasteful number, since it uses less digits than its factorization.

20568448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195 (or 183 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 37.

The square root of 20568448 is about 4535.2450870929. The cubic root of 20568448 is about 273.9894502838.

The spelling of 20568448 in words is "twenty million, five hundred sixty-eight thousand, four hundred forty-eight".