20573339 has 6 divisors (see below), whose sum is σ = 21507276. Its totient is φ = 19678340.

The previous prime is 20573327. The next prime is 20573341. The reversal of 20573339 is 93337502.

It is not a de Polignac number, because 20573339 - 2¹⁶ = 20507803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20573309) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18917 + ... + 19974.

It is an arithmetic number, because the mean of its divisors is an integer number (3584546).

Almost surely, 2^20573339 is an apocalyptic number.

20573339 is a deficient number, since it is larger than the sum of its proper divisors (933937).

20573339 is an equidigital number, since it uses as much as digits as its factorization.

20573339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38937 (or 38914 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 32.

The square root of 20573339 is about 4535.7842761754. The cubic root of 20573339 is about 274.0111660074.

The spelling of 20573339 in words is "twenty million, five hundred seventy-three thousand, three hundred thirty-nine".