28057127 has 4 divisors (see below), whose sum is σ = 32065296. Its totient is φ = 24048960.

The previous prime is 28057067. The next prime is 28057151. The reversal of 28057127 is 72175082.

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 28057127 - 2¹⁴ = 28040743 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28057093 and 28057102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28057177) 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, 2004074 + ... + 2004087.

It is an arithmetic number, because the mean of its divisors is an integer number (8016324).

Almost surely, 2^28057127 is an apocalyptic number.

28057127 is a deficient number, since it is larger than the sum of its proper divisors (4008169).

28057127 is an equidigital number, since it uses as much as digits as its factorization.

28057127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4008168.

The product of its (nonzero) digits is 7840, while the sum is 32.

The square root of 28057127 is about 5296.8978657324. The cubic root of 28057127 is about 303.8652702552.

The spelling of 28057127 in words is "twenty-eight million, fifty-seven thousand, one hundred twenty-seven".