28544727 has 4 divisors (see below), whose sum is σ = 38059640. Its totient is φ = 19029816.

The previous prime is 28544693. The next prime is 28544743. The reversal of 28544727 is 72744582.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 28544727 - 2⁷ = 28544599 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 (28544777) 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, 4757452 + ... + 4757457.

It is an arithmetic number, because the mean of its divisors is an integer number (9514910).

Almost surely, 2^28544727 is an apocalyptic number.

28544727 is a deficient number, since it is larger than the sum of its proper divisors (9514913).

28544727 is an equidigital number, since it uses as much as digits as its factorization.

28544727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9514912.

The product of its digits is 125440, while the sum is 39.

The square root of 28544727 is about 5342.7265511160. The cubic root of 28544727 is about 305.6154445597.

The spelling of 28544727 in words is "twenty-eight million, five hundred forty-four thousand, seven hundred twenty-seven".