28369727 has 4 divisors (see below), whose sum is σ = 28435680. Its totient is φ = 28303776.

The previous prime is 28369711. The next prime is 28369739. The reversal of 28369727 is 72796382.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72796382 = 2 ⋅36398191.

It is a cyclic number.

It is not a de Polignac number, because 28369727 - 2⁴ = 28369711 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 (28369127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32327 + ... + 33192.

It is an arithmetic number, because the mean of its divisors is an integer number (7108920).

Almost surely, 2^28369727 is an apocalyptic number.

28369727 is a deficient number, since it is larger than the sum of its proper divisors (65953).

28369727 is an equidigital number, since it uses as much as digits as its factorization.

28369727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65952.

The product of its digits is 254016, while the sum is 44.

The square root of 28369727 is about 5326.3239668650. The cubic root of 28369727 is about 304.9896153411.

The spelling of 28369727 in words is "twenty-eight million, three hundred sixty-nine thousand, seven hundred twenty-seven".