20301641 has 4 divisors (see below), whose sum is σ = 20850372. Its totient is φ = 19752912.

The previous prime is 20301637. The next prime is 20301647. The reversal of 20301641 is 14610302.

20301641 is nontrivially palindromic in base 8.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17808400 + 2493241 = 4220^2 + 1579^2 .

It is a cyclic number.

It is not a de Polignac number, because 20301641 - 2² = 20301637 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20301647) 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, 274310 + ... + 274383.

It is an arithmetic number, because the mean of its divisors is an integer number (5212593).

Almost surely, 2^20301641 is an apocalyptic number.

It is an amenable number.

20301641 is a deficient number, since it is larger than the sum of its proper divisors (548731).

20301641 is an equidigital number, since it uses as much as digits as its factorization.

20301641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548730.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 20301641 is about 4505.7342353938. The cubic root of 20301641 is about 272.7995908253.

Adding to 20301641 its reverse (14610302), we get a palindrome (34911943).

The spelling of 20301641 in words is "twenty million, three hundred one thousand, six hundred forty-one".