28816516 has 24 divisors (see below), whose sum is σ = 53149824. Its totient is φ = 13643520.

The previous prime is 28816511. The next prime is 28816519. The reversal of 28816516 is 61561882.

It is not an unprimeable number, because it can be changed into a prime (28816511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7956 + ... + 10996.

It is an arithmetic number, because the mean of its divisors is an integer number (2214576).

Almost surely, 2^28816516 is an apocalyptic number.

It is an amenable number.

28816516 is a deficient number, since it is larger than the sum of its proper divisors (24333308).

28816516 is a wasteful number, since it uses less digits than its factorization.

28816516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3171 (or 3169 counting only the distinct ones).

The product of its digits is 23040, while the sum is 37.

The square root of 28816516 is about 5368.1017128963. The cubic root of 28816516 is about 306.5823560500.

The spelling of 28816516 in words is "twenty-eight million, eight hundred sixteen thousand, five hundred sixteen".