20748803 has 2 divisors, whose sum is σ = 20748804. Its totient is φ = 20748802.

The previous prime is 20748773. The next prime is 20748809. The reversal of 20748803 is 30884702.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20748803 - 2⁸ = 20748547 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20748803.

It is not a weakly prime, because it can be changed into another prime (20748809) 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 as a sum of consecutive naturals, namely, 10374401 + 10374402.

It is an arithmetic number, because the mean of its divisors is an integer number (10374402).

Almost surely, 2^20748803 is an apocalyptic number.

20748803 is a deficient number, since it is larger than the sum of its proper divisors (1).

20748803 is an equidigital number, since it uses as much as digits as its factorization.

20748803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 20748803 is about 4555.0853998581. The cubic root of 20748803 is about 274.7879489272.

The spelling of 20748803 in words is "twenty million, seven hundred forty-eight thousand, eight hundred three".