28166127 has 16 divisors (see below), whose sum is σ = 43379712. Its totient is φ = 16065920.

The previous prime is 28166119. The next prime is 28166137. The reversal of 28166127 is 72166182.

It is a cyclic number.

It is not a de Polignac number, because 28166127 - 2³ = 28166119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28166137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24543 + ... + 25664.

It is an arithmetic number, because the mean of its divisors is an integer number (2711232).

Almost surely, 2^28166127 is an apocalyptic number.

28166127 is a deficient number, since it is larger than the sum of its proper divisors (15213585).

28166127 is a wasteful number, since it uses less digits than its factorization.

28166127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50238.

The product of its digits is 8064, while the sum is 33.

The square root of 28166127 is about 5307.1769331727. The cubic root of 28166127 is about 304.2582603079.

The spelling of 28166127 in words is "twenty-eight million, one hundred sixty-six thousand, one hundred twenty-seven".