20928127 has 8 divisors (see below), whose sum is σ = 23120640. Its totient is φ = 18783960.

The previous prime is 20928107. The next prime is 20928157. The reversal of 20928127 is 72182902.

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

It is a cyclic number.

It is not a de Polignac number, because 20928127 - 2¹⁵ = 20895359 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 (20928107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11173 + ... + 12910.

It is an arithmetic number, because the mean of its divisors is an integer number (2890080).

Almost surely, 2^20928127 is an apocalyptic number.

20928127 is a deficient number, since it is larger than the sum of its proper divisors (2192513).

20928127 is a wasteful number, since it uses less digits than its factorization.

20928127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24173.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 20928127 is about 4574.7269863895. The cubic root of 20928127 is about 275.5773084185.

The spelling of 20928127 in words is "twenty million, nine hundred twenty-eight thousand, one hundred twenty-seven".