20441505 has 16 divisors (see below), whose sum is σ = 37378944. Its totient is φ = 9344640.

The previous prime is 20441471. The next prime is 20441563. The reversal of 20441505 is 50514402.

It is not a de Polignac number, because 20441505 - 2⁸ = 20441249 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97236 + ... + 97445.

It is an arithmetic number, because the mean of its divisors is an integer number (2336184).

Almost surely, 2^20441505 is an apocalyptic number.

It is an amenable number.

20441505 is a deficient number, since it is larger than the sum of its proper divisors (16937439).

20441505 is a wasteful number, since it uses less digits than its factorization.

20441505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194696.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 20441505 is about 4521.2282623199. The cubic root of 20441505 is about 273.4246233174.

Adding to 20441505 its reverse (50514402), we get a palindrome (70955907).

The spelling of 20441505 in words is "twenty million, four hundred forty-one thousand, five hundred five".