20888411 has 4 divisors (see below), whose sum is σ = 21374232. Its totient is φ = 20402592.

The previous prime is 20888383. The next prime is 20888423. The reversal of 20888411 is 11488802.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20888411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20888431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 242846 + ... + 242931.

It is an arithmetic number, because the mean of its divisors is an integer number (5343558).

Almost surely, 2^20888411 is an apocalyptic number.

20888411 is a deficient number, since it is larger than the sum of its proper divisors (485821).

20888411 is an equidigital number, since it uses as much as digits as its factorization.

20888411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485820.

The product of its (nonzero) digits is 4096, while the sum is 32.

The square root of 20888411 is about 4570.3841195243. The cubic root of 20888411 is about 275.4028739657.

The spelling of 20888411 in words is "twenty million, eight hundred eighty-eight thousand, four hundred eleven".