20450803 has 8 divisors (see below), whose sum is σ = 20813760. Its totient is φ = 20091240.

The previous prime is 20450797. The next prime is 20450819. The reversal of 20450803 is 30805402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20450803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20450873) 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, 13288 + ... + 14746.

It is an arithmetic number, because the mean of its divisors is an integer number (2601720).

Almost surely, 2^20450803 is an apocalyptic number.

20450803 is a deficient number, since it is larger than the sum of its proper divisors (362957).

20450803 is a wasteful number, since it uses less digits than its factorization.

20450803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1697.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 20450803 is about 4522.2564058222. The cubic root of 20450803 is about 273.4660735724.

The spelling of 20450803 in words is "twenty million, four hundred fifty thousand, eight hundred three".