20487127 has 4 divisors (see below), whose sum is σ = 20497240. Its totient is φ = 20477016.

The previous prime is 20487119. The next prime is 20487157. The reversal of 20487127 is 72178402.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 20487127 - 2³ = 20487119 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 (20487107) 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, 852 + ... + 6457.

It is an arithmetic number, because the mean of its divisors is an integer number (5124310).

Almost surely, 2^20487127 is an apocalyptic number.

20487127 is a deficient number, since it is larger than the sum of its proper divisors (10113).

20487127 is an equidigital number, since it uses as much as digits as its factorization.

20487127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10112.

The product of its (nonzero) digits is 6272, while the sum is 31.

The square root of 20487127 is about 4526.2707607919. The cubic root of 20487127 is about 273.6278847630.

The spelling of 20487127 in words is "twenty million, four hundred eighty-seven thousand, one hundred twenty-seven".