20493203 has 8 divisors (see below), whose sum is σ = 20792496. Its totient is φ = 20196000.

The previous prime is 20493197. The next prime is 20493257. The reversal of 20493203 is 30239402.

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

It is a cyclic number.

It is not a de Polignac number, because 20493203 - 2⁸ = 20492947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20493293) 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, 33125 + ... + 33737.

It is an arithmetic number, because the mean of its divisors is an integer number (2599062).

Almost surely, 2^20493203 is an apocalyptic number.

20493203 is a deficient number, since it is larger than the sum of its proper divisors (299293).

20493203 is a wasteful number, since it uses less digits than its factorization.

20493203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1045.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 20493203 is about 4526.9419037580. The cubic root of 20493203 is about 273.6549326208.

The spelling of 20493203 in words is "twenty million, four hundred ninety-three thousand, two hundred three".