28761727 has 4 divisors (see below), whose sum is σ = 28852776. Its totient is φ = 28670680.

The previous prime is 28761709. The next prime is 28761731. The reversal of 28761727 is 72716782.

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 28761727 - 2⁷ = 28761599 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28761727.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28761737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45049 + ... + 45682.

It is an arithmetic number, because the mean of its divisors is an integer number (7213194).

Almost surely, 2^28761727 is an apocalyptic number.

28761727 is a deficient number, since it is larger than the sum of its proper divisors (91049).

28761727 is an equidigital number, since it uses as much as digits as its factorization.

28761727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91048.

The product of its digits is 65856, while the sum is 40.

The square root of 28761727 is about 5362.9960842798. The cubic root of 28761727 is about 306.3879305385.

The spelling of 28761727 in words is "twenty-eight million, seven hundred sixty-one thousand, seven hundred twenty-seven".