28789927 has 6 divisors (see below), whose sum is σ = 28975128. Its totient is φ = 28605852.

The previous prime is 28789903. The next prime is 28789931. The reversal of 28789927 is 72998782.

It is not a de Polignac number, because 28789927 - 2⁷ = 28789799 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 (28789027) 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, 39238 + ... + 39964.

It is an arithmetic number, because the mean of its divisors is an integer number (4829188).

Almost surely, 2^28789927 is an apocalyptic number.

28789927 is a deficient number, since it is larger than the sum of its proper divisors (185201).

28789927 is an frugal number, since it uses more digits than its factorization.

28789927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1125 (or 926 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 52.

The square root of 28789927 is about 5365.6245675597. The cubic root of 28789927 is about 306.4880325175.

The spelling of 28789927 in words is "twenty-eight million, seven hundred eighty-nine thousand, nine hundred twenty-seven".