20575568 has 40 divisors (see below), whose sum is σ = 44330496. Its totient is φ = 9187200.

The previous prime is 20575567. The next prime is 20575571. The reversal of 20575568 is 86557502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20575567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4853 + ... + 8043.

Almost surely, 2^20575568 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 20575568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22165248).

20575568 is an abundant number, since it is smaller than the sum of its proper divisors (23754928).

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

20575568 is a wasteful number, since it uses less digits than its factorization.

20575568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3243 (or 3237 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 38.

The square root of 20575568 is about 4536.0299822642. The cubic root of 20575568 is about 274.0210614815.

The spelling of 20575568 in words is "twenty million, five hundred seventy-five thousand, five hundred sixty-eight".