20385411 has 4 divisors (see below), whose sum is σ = 27180552. Its totient is φ = 13590272.

The previous prime is 20385401. The next prime is 20385419. The reversal of 20385411 is 11458302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20385411 - 2⁹ = 20384899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20385419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3397566 + ... + 3397571.

It is an arithmetic number, because the mean of its divisors is an integer number (6795138).

Almost surely, 2^20385411 is an apocalyptic number.

20385411 is a deficient number, since it is larger than the sum of its proper divisors (6795141).

20385411 is an equidigital number, since it uses as much as digits as its factorization.

20385411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6795140.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 20385411 is about 4515.0205979597. The cubic root of 20385411 is about 273.1742906151.

The spelling of 20385411 in words is "twenty million, three hundred eighty-five thousand, four hundred eleven".