20226603 has 4 divisors (see below), whose sum is σ = 26968808. Its totient is φ = 13484400.

The previous prime is 20226599. The next prime is 20226623. The reversal of 20226603 is 30662202.

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

It is not a de Polignac number, because 20226603 - 2² = 20226599 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20226603.

It is not an unprimeable number, because it can be changed into a prime (20226623) 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, 3371098 + ... + 3371103.

It is an arithmetic number, because the mean of its divisors is an integer number (6742202).

Almost surely, 2^20226603 is an apocalyptic number.

20226603 is a deficient number, since it is larger than the sum of its proper divisors (6742205).

20226603 is an equidigital number, since it uses as much as digits as its factorization.

20226603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6742204.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 20226603 is about 4497.3995819807. The cubic root of 20226603 is about 272.4630727393.

Adding to 20226603 its reverse (30662202), we get a palindrome (50888805).

The spelling of 20226603 in words is "twenty million, two hundred twenty-six thousand, six hundred three".