20384835 has 16 divisors (see below), whose sum is σ = 32706720. Its totient is φ = 10841600.

The previous prime is 20384809. The next prime is 20384851. The reversal of 20384835 is 53848302.

It is not a de Polignac number, because 20384835 - 2¹¹ = 20382787 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20384796 and 20384805.

It is an unprimeable number.

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, 4321 + ... + 7709.

It is an arithmetic number, because the mean of its divisors is an integer number (2044170).

Almost surely, 2^20384835 is an apocalyptic number.

20384835 is a deficient number, since it is larger than the sum of its proper divisors (12321885).

20384835 is a wasteful number, since it uses less digits than its factorization.

20384835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3798.

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 20384835 is about 4514.9568104247. The cubic root of 20384835 is about 273.1717176987.

The spelling of 20384835 in words is "twenty million, three hundred eighty-four thousand, eight hundred thirty-five".