20972303 has 12 divisors (see below), whose sum is σ = 23601192. Its totient is φ = 18468720.

The previous prime is 20972291. The next prime is 20972311. The reversal of 20972303 is 30327902.

It is not a de Polignac number, because 20972303 - 2¹⁸ = 20710159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20972323) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 92276 + ... + 92502.

It is an arithmetic number, because the mean of its divisors is an integer number (1966766).

Almost surely, 2^20972303 is an apocalyptic number.

20972303 is a deficient number, since it is larger than the sum of its proper divisors (2628889).

20972303 is an equidigital number, since it uses as much as digits as its factorization.

20972303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502 (or 275 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 26.

The square root of 20972303 is about 4579.5527074159. The cubic root of 20972303 is about 275.7710723337.

The spelling of 20972303 in words is "twenty million, nine hundred seventy-two thousand, three hundred three".