28125127 has 2 divisors, whose sum is σ = 28125128. Its totient is φ = 28125126.

The previous prime is 28125107. The next prime is 28125169. The reversal of 28125127 is 72152182.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28125127 - 2¹⁵ = 28092359 is a prime.

It is a super-2 number, since 2×28125127² = 1582045537532258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28125095 and 28125104.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28125107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14062563 + 14062564.

It is an arithmetic number, because the mean of its divisors is an integer number (14062564).

Almost surely, 2^28125127 is an apocalyptic number.

28125127 is a deficient number, since it is larger than the sum of its proper divisors (1).

28125127 is an equidigital number, since it uses as much as digits as its factorization.

28125127 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2240, while the sum is 28.

The square root of 28125127 is about 5303.3128325604. The cubic root of 28125127 is about 304.1105575200.

The spelling of 28125127 in words is "twenty-eight million, one hundred twenty-five thousand, one hundred twenty-seven".