28816777 has 8 divisors (see below), whose sum is σ = 31502880. Its totient is φ = 26141760.

The previous prime is 28816771. The next prime is 28816793. The reversal of 28816777 is 77761882.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28816777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28816771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3249 + ... + 8257.

It is an arithmetic number, because the mean of its divisors is an integer number (3937860).

Almost surely, 2^28816777 is an apocalyptic number.

It is an amenable number.

28816777 is a deficient number, since it is larger than the sum of its proper divisors (2686103).

28816777 is a wasteful number, since it uses less digits than its factorization.

28816777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5543.

The product of its digits is 263424, while the sum is 46.

The square root of 28816777 is about 5368.1260231109. The cubic root of 28816777 is about 306.5832816506.

The spelling of 28816777 in words is "twenty-eight million, eight hundred sixteen thousand, seven hundred seventy-seven".