20241289 has 4 divisors (see below), whose sum is σ = 21306640. Its totient is φ = 19175940.

The previous prime is 20241239. The next prime is 20241313. The reversal of 20241289 is 98214202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 20241289 - 2⁹ = 20240777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20241229) 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 3 ways as a sum of consecutive naturals, for example, 532647 + ... + 532684.

It is an arithmetic number, because the mean of its divisors is an integer number (5326660).

Almost surely, 2^20241289 is an apocalyptic number.

It is an amenable number.

20241289 is a deficient number, since it is larger than the sum of its proper divisors (1065351).

20241289 is a wasteful number, since it uses less digits than its factorization.

20241289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1065350.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 20241289 is about 4499.0320069988. The cubic root of 20241289 is about 272.5289995230.

The spelling of 20241289 in words is "twenty million, two hundred forty-one thousand, two hundred eighty-nine".