20384135 has 16 divisors (see below), whose sum is σ = 25214976. Its totient is φ = 15811488.

The previous prime is 20384113. The next prime is 20384149. The reversal of 20384135 is 53148302.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20384135 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 29504 + ... + 30186.

It is an arithmetic number, because the mean of its divisors is an integer number (1575936).

Almost surely, 2^20384135 is an apocalyptic number.

20384135 is a deficient number, since it is larger than the sum of its proper divisors (4830841).

20384135 is a wasteful number, since it uses less digits than its factorization.

20384135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 20384135 is about 4514.8792896378. The cubic root of 20384135 is about 273.1685908254.

The spelling of 20384135 in words is "twenty million, three hundred eighty-four thousand, one hundred thirty-five".