20240571 has 8 divisors (see below), whose sum is σ = 29063440. Its totient is φ = 12455712.

The previous prime is 20240543. The next prime is 20240581. The reversal of 20240571 is 17504202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20240571 - 2¹¹ = 20238523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20240531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259456 + ... + 259533.

It is an arithmetic number, because the mean of its divisors is an integer number (3632930).

Almost surely, 2^20240571 is an apocalyptic number.

20240571 is a deficient number, since it is larger than the sum of its proper divisors (8822869).

20240571 is a wasteful number, since it uses less digits than its factorization.

20240571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519005.

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 20240571 is about 4498.9522113488. The cubic root of 20240571 is about 272.5257770975.

Adding to 20240571 its reverse (17504202), we get a palindrome (37744773).

The spelling of 20240571 in words is "twenty million, two hundred forty thousand, five hundred seventy-one".