20191127 has 4 divisors (see below), whose sum is σ = 22026696. Its totient is φ = 18355560.

The previous prime is 20191117. The next prime is 20191133. The reversal of 20191127 is 72119102.

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 20191127 - 2⁶ = 20191063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20191117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 917768 + ... + 917789.

It is an arithmetic number, because the mean of its divisors is an integer number (5506674).

Almost surely, 2^20191127 is an apocalyptic number.

20191127 is a deficient number, since it is larger than the sum of its proper divisors (1835569).

20191127 is a wasteful number, since it uses less digits than its factorization.

20191127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1835568.

The product of its (nonzero) digits is 252, while the sum is 23.

The square root of 20191127 is about 4493.4537941321. The cubic root of 20191127 is about 272.3036860053.

The spelling of 20191127 in words is "twenty million, one hundred ninety-one thousand, one hundred twenty-seven".