28816547 has 4 divisors (see below), whose sum is σ = 30511656. Its totient is φ = 27121440.

The previous prime is 28816523. The next prime is 28816549. The reversal of 28816547 is 74561882.

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 28816547 - 2¹⁶ = 28751011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28816549) 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, 847529 + ... + 847562.

It is an arithmetic number, because the mean of its divisors is an integer number (7627914).

Almost surely, 2^28816547 is an apocalyptic number.

28816547 is a deficient number, since it is larger than the sum of its proper divisors (1695109).

28816547 is a wasteful number, since it uses less digits than its factorization.

28816547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1695108.

The product of its digits is 107520, while the sum is 41.

The square root of 28816547 is about 5368.1046003222. The cubic root of 28816547 is about 306.5824659875.

The spelling of 28816547 in words is "twenty-eight million, eight hundred sixteen thousand, five hundred forty-seven".