28704027 has 8 divisors (see below), whose sum is σ = 41751360. Its totient is φ = 17396360.

The previous prime is 28704017. The next prime is 28704061. The reversal of 28704027 is 72040782.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28704027 - 2¹⁴ = 28687643 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28703985 and 28704003.

It is not an unprimeable number, because it can be changed into a prime (28704017) 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 7 ways as a sum of consecutive naturals, for example, 434877 + ... + 434942.

It is an arithmetic number, because the mean of its divisors is an integer number (5218920).

Almost surely, 2^28704027 is an apocalyptic number.

28704027 is a deficient number, since it is larger than the sum of its proper divisors (13047333).

28704027 is a wasteful number, since it uses less digits than its factorization.

28704027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 869833.

The product of its (nonzero) digits is 6272, while the sum is 30.

The square root of 28704027 is about 5357.6139278601. The cubic root of 28704027 is about 306.1829078628.

The spelling of 28704027 in words is "twenty-eight million, seven hundred four thousand, twenty-seven".