28146727 has 6 divisors (see below), whose sum is σ = 32742168. Its totient is φ = 24125724.

The previous prime is 28146721. The next prime is 28146731. The reversal of 28146727 is 72764182.

It is not a de Polignac number, because 28146727 - 2³ = 28146719 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 (28146721) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 287163 + ... + 287260.

It is an arithmetic number, because the mean of its divisors is an integer number (5457028).

Almost surely, 2^28146727 is an apocalyptic number.

28146727 is a deficient number, since it is larger than the sum of its proper divisors (4595441).

28146727 is an equidigital number, since it uses as much as digits as its factorization.

28146727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574437 (or 574430 counting only the distinct ones).

The product of its digits is 37632, while the sum is 37.

The square root of 28146727 is about 5305.3489046433. The cubic root of 28146727 is about 304.1883895497.

The spelling of 28146727 in words is "twenty-eight million, one hundred forty-six thousand, seven hundred twenty-seven".