20328803 has 16 divisors (see below), whose sum is σ = 24364800. Its totient is φ = 16742880.

The previous prime is 20328793. The next prime is 20328811. The reversal of 20328803 is 30882302.

It is not a de Polignac number, because 20328803 - 2⁸ = 20328547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20328853) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2693 + ... + 6921.

It is an arithmetic number, because the mean of its divisors is an integer number (1522800).

Almost surely, 2^20328803 is an apocalyptic number.

20328803 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20328803 is a deficient number, since it is larger than the sum of its proper divisors (4035997).

20328803 is a wasteful number, since it uses less digits than its factorization.

20328803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4282.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 20328803 is about 4508.7473870245. The cubic root of 20328803 is about 272.9211980782.

It can be divided in two parts, 20 and 328803, that added together give a palindrome (328823).

The spelling of 20328803 in words is "twenty million, three hundred twenty-eight thousand, eight hundred three".