20446103 has 4 divisors (see below), whose sum is σ = 21335088. Its totient is φ = 19557120.

The previous prime is 20446093. The next prime is 20446123. The reversal of 20446103 is 30164402.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30164402 = 2 ⋅15082201.

It is a cyclic number.

It is not a de Polignac number, because 20446103 - 2¹⁴ = 20429719 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 (20446123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 444458 + ... + 444503.

It is an arithmetic number, because the mean of its divisors is an integer number (5333772).

Almost surely, 2^20446103 is an apocalyptic number.

20446103 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20446103 is a deficient number, since it is larger than the sum of its proper divisors (888985).

20446103 is an equidigital number, since it uses as much as digits as its factorization.

20446103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 888984.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 20446103 is about 4521.7367238706. The cubic root of 20446103 is about 273.4451226588.

The spelling of 20446103 in words is "twenty million, four hundred forty-six thousand, one hundred three".