28816814 has 16 divisors (see below), whose sum is σ = 46639152. Its totient is φ = 13274688.

The previous prime is 28816793. The next prime is 28816817. The reversal of 28816814 is 41861882.

It is a super-2 number, since 2×28816814² = 1660817538221192, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28816817) 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, 24197 + ... + 25359.

It is an arithmetic number, because the mean of its divisors is an integer number (2914947).

Almost surely, 2^28816814 is an apocalyptic number.

28816814 is a deficient number, since it is larger than the sum of its proper divisors (17822338).

28816814 is a wasteful number, since it uses less digits than its factorization.

28816814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2131.

The product of its digits is 24576, while the sum is 38.

The square root of 28816814 is about 5368.1294693776. The cubic root of 28816814 is about 306.5834128656.

The spelling of 28816814 in words is "twenty-eight million, eight hundred sixteen thousand, eight hundred fourteen".