20041570 has 16 divisors (see below), whose sum is σ = 36126648. Its totient is φ = 8005120.

The previous prime is 20041537. The next prime is 20041573. The reversal of 20041570 is 7514002.

It can be written as a sum of positive squares in 4 ways, for example, as 19918369 + 123201 = 4463^2 + 351^2 .

It is not an unprimeable number, because it can be changed into a prime (20041573) 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, 10962 + ... + 12658.

Almost surely, 2^20041570 is an apocalyptic number.

20041570 is a deficient number, since it is larger than the sum of its proper divisors (16085078).

20041570 is a wasteful number, since it uses less digits than its factorization.

20041570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2885.

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 20041570 is about 4476.7812097533. The cubic root of 20041570 is about 271.6296954133.

Adding to 20041570 its reverse (7514002), we get a palindrome (27555572).

The spelling of 20041570 in words is "twenty million, forty-one thousand, five hundred seventy".