20973303 has 16 divisors (see below), whose sum is σ = 33462240. Its totient is φ = 12906432.

The previous prime is 20973301. The next prime is 20973307. The reversal of 20973303 is 30337902.

It is not a de Polignac number, because 20973303 - 2¹ = 20973301 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20973301) 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 15 ways as a sum of consecutive naturals, for example, 29526 + ... + 30227.

It is an arithmetic number, because the mean of its divisors is an integer number (2091390).

Almost surely, 2^20973303 is an apocalyptic number.

20973303 is a deficient number, since it is larger than the sum of its proper divisors (12488937).

20973303 is a wasteful number, since it uses less digits than its factorization.

20973303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59775 (or 59769 counting only the distinct ones).

The product of its (nonzero) digits is 3402, while the sum is 27.

The square root of 20973303 is about 4579.6618870829. The cubic root of 20973303 is about 275.7754553635.

The spelling of 20973303 in words is "twenty million, nine hundred seventy-three thousand, three hundred three".