20575572 has 12 divisors (see below), whose sum is σ = 48009696. Its totient is φ = 6858520.

The previous prime is 20575571. The next prime is 20575573. The reversal of 20575572 is 27557502.

It is an interprime number because it is at equal distance from previous prime (20575571) and next prime (20575573).

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20575571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 857304 + ... + 857327.

It is an arithmetic number, because the mean of its divisors is an integer number (4000808).

Almost surely, 2^20575572 is an apocalyptic number.

It is an amenable number.

20575572 is an abundant number, since it is smaller than the sum of its proper divisors (27434124).

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

20575572 is a wasteful number, since it uses less digits than its factorization.

20575572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1714638 (or 1714636 counting only the distinct ones).

The product of its (nonzero) digits is 24500, while the sum is 33.

The square root of 20575572 is about 4536.0304231784. The cubic root of 20575572 is about 274.0210792386.

It can be divided in two parts, 2057557 and 2, that multiplied together give a palindrome (4115114).

The spelling of 20575572 in words is "twenty million, five hundred seventy-five thousand, five hundred seventy-two".