20572035 has 16 divisors (see below), whose sum is σ = 35907840. Its totient is φ = 9974240.

The previous prime is 20572033. The next prime is 20572039. The reversal of 20572035 is 53027502.

It is not a de Polignac number, because 20572035 - 2¹ = 20572033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20571996 and 20572014.

It is not an unprimeable number, because it can be changed into a prime (20572033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62175 + ... + 62504.

It is an arithmetic number, because the mean of its divisors is an integer number (2244240).

Almost surely, 2^20572035 is an apocalyptic number.

20572035 is a deficient number, since it is larger than the sum of its proper divisors (15335805).

20572035 is a wasteful number, since it uses less digits than its factorization.

20572035 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124698.

The product of its (nonzero) digits is 2100, while the sum is 24.

The square root of 20572035 is about 4535.6405280842. The cubic root of 20572035 is about 274.0053766683.

Adding to 20572035 its reverse (53027502), we get a palindrome (73599537).

The spelling of 20572035 in words is "twenty million, five hundred seventy-two thousand, thirty-five".