20845103 has 8 divisors (see below), whose sum is σ = 21489696. Its totient is φ = 20210400.

The previous prime is 20845091. The next prime is 20845129. The reversal of 20845103 is 30154802.

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 20845103 - 2¹⁰ = 20844079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20845163) 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 7 ways as a sum of consecutive naturals, for example, 1925 + ... + 6737.

It is an arithmetic number, because the mean of its divisors is an integer number (2686212).

Almost surely, 2^20845103 is an apocalyptic number.

20845103 is a deficient number, since it is larger than the sum of its proper divisors (644593).

20845103 is an equidigital number, since it uses as much as digits as its factorization.

It is an anagram of its base 9 representation: 20845103 = (43201085)₉.

20845103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4945.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 20845103 is about 4565.6437662174. The cubic root of 20845103 is about 275.2124110972.

Adding to 20845103 its reverse (30154802), we get a palindrome (50999905).

The spelling of 20845103 in words is "twenty million, eight hundred forty-five thousand, one hundred three".