21488127 has 8 divisors (see below), whose sum is σ = 28827264. Its totient is φ = 14237208.

The previous prime is 21488113. The next prime is 21488143. The reversal of 21488127 is 72188412.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21488127 - 2⁶ = 21488063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21488827) 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 7 ways as a sum of consecutive naturals, for example, 21483 + ... + 22460.

It is an arithmetic number, because the mean of its divisors is an integer number (3603408).

Almost surely, 2^21488127 is an apocalyptic number.

21488127 is a deficient number, since it is larger than the sum of its proper divisors (7339137).

21488127 is a wasteful number, since it uses less digits than its factorization.

21488127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44109.

The product of its digits is 7168, while the sum is 33.

The square root of 21488127 is about 4635.5287724272. The cubic root of 21488127 is about 278.0136934062.

The spelling of 21488127 in words is "twenty-one million, four hundred eighty-eight thousand, one hundred twenty-seven".