20570441 has 8 divisors (see below), whose sum is σ = 21514560. Its totient is φ = 19630512.

The previous prime is 20570423. The next prime is 20570449. The reversal of 20570441 is 14407502.

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

It is a cyclic number.

It is not a de Polignac number, because 20570441 - 2⁶ = 20570377 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20570449) 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, 13370 + ... + 14828.

It is an arithmetic number, because the mean of its divisors is an integer number (2689320).

Almost surely, 2^20570441 is an apocalyptic number.

It is an amenable number.

20570441 is a deficient number, since it is larger than the sum of its proper divisors (944119).

20570441 is a wasteful number, since it uses less digits than its factorization.

20570441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2095.

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 20570441 is about 4535.4648052873. The cubic root of 20570441 is about 273.9982994904.

Adding to 20570441 its reverse (14407502), we get a palindrome (34977943).

The spelling of 20570441 in words is "twenty million, five hundred seventy thousand, four hundred forty-one".