20839359 has 16 divisors (see below), whose sum is σ = 28235520. Its totient is φ = 13670400.

The previous prime is 20839339. The next prime is 20839367. The reversal of 20839359 is 95393802.

It is not a de Polignac number, because 20839359 - 2⁵ = 20839327 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20839309) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80959 + ... + 81215.

It is an arithmetic number, because the mean of its divisors is an integer number (1764720).

Almost surely, 2^20839359 is an apocalyptic number.

20839359 is a deficient number, since it is larger than the sum of its proper divisors (7396161).

20839359 is a wasteful number, since it uses less digits than its factorization.

20839359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590.

The product of its (nonzero) digits is 58320, while the sum is 39.

The square root of 20839359 is about 4565.0146768658. The cubic root of 20839359 is about 275.1871299346.

The spelling of 20839359 in words is "twenty million, eight hundred thirty-nine thousand, three hundred fifty-nine".