28260727 has 4 divisors (see below), whose sum is σ = 30829896. Its totient is φ = 25691560.

The previous prime is 28260697. The next prime is 28260737. The reversal of 28260727 is 72706282.

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 28260727 - 2⁷ = 28260599 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28260692 and 28260701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28260737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1284568 + ... + 1284589.

It is an arithmetic number, because the mean of its divisors is an integer number (7707474).

Almost surely, 2^28260727 is an apocalyptic number.

28260727 is a deficient number, since it is larger than the sum of its proper divisors (2569169).

28260727 is a wasteful number, since it uses less digits than its factorization.

28260727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2569168.

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 28260727 is about 5316.0819218669. The cubic root of 28260727 is about 304.5985114147.

It can be divided in two parts, 282 and 60727, that added together give a square (61009 = 247²).

The spelling of 28260727 in words is "twenty-eight million, two hundred sixty thousand, seven hundred twenty-seven".