28125727 has 8 divisors (see below), whose sum is σ = 32596992. Its totient is φ = 23767800.

The previous prime is 28125709. The next prime is 28125731. The reversal of 28125727 is 72752182.

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

It is not a de Polignac number, because 28125727 - 2¹¹ = 28123679 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28125692 and 28125701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28125707) 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, 27799 + ... + 28792.

It is an arithmetic number, because the mean of its divisors is an integer number (4074624).

Almost surely, 2^28125727 is an apocalyptic number.

28125727 is a deficient number, since it is larger than the sum of its proper divisors (4471265).

28125727 is an equidigital number, since it uses as much as digits as its factorization.

28125727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56669.

The product of its digits is 15680, while the sum is 34.

The square root of 28125727 is about 5303.3694006735. The cubic root of 28125727 is about 304.1127200588.

The spelling of 28125727 in words is "twenty-eight million, one hundred twenty-five thousand, seven hundred twenty-seven".