20300045 has 4 divisors (see below), whose sum is σ = 24360060. Its totient is φ = 16240032.

The previous prime is 20300041. The next prime is 20300081. The reversal of 20300045 is 54000302.

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 6543364 + 13756681 = 2558^2 + 3709^2 .

It is a cyclic number.

It is not a de Polignac number, because 20300045 - 2² = 20300041 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20300041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2030000 + ... + 2030009.

It is an arithmetic number, because the mean of its divisors is an integer number (6090015).

Almost surely, 2^20300045 is an apocalyptic number.

It is an amenable number.

20300045 is a deficient number, since it is larger than the sum of its proper divisors (4060015).

20300045 is an equidigital number, since it uses as much as digits as its factorization.

20300045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4060014.

The product of its (nonzero) digits is 120, while the sum is 14.

The square root of 20300045 is about 4505.5571242633. The cubic root of 20300045 is about 272.7924419852.

Adding to 20300045 its reverse (54000302), we get a palindrome (74300347).

The spelling of 20300045 in words is "twenty million, three hundred thousand, forty-five".