20839065 has 16 divisors (see below), whose sum is σ = 35907648. Its totient is φ = 10259136.

The previous prime is 20839051. The next prime is 20839097. The reversal of 20839065 is 56093802.

It is a happy number.

It is not a de Polignac number, because 20839065 - 2⁵ = 20839033 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53239 + ... + 53628.

It is an arithmetic number, because the mean of its divisors is an integer number (2244228).

Almost surely, 2^20839065 is an apocalyptic number.

It is an amenable number.

20839065 is a deficient number, since it is larger than the sum of its proper divisors (15068583).

20839065 is a wasteful number, since it uses less digits than its factorization.

20839065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106888.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 20839065 is about 4564.9824753223. The cubic root of 20839065 is about 275.1858358226.

The spelling of 20839065 in words is "twenty million, eight hundred thirty-nine thousand, sixty-five".