28916744 has 16 divisors (see below), whose sum is σ = 54379500. Its totient is φ = 14415552.

The previous prime is 28916737. The next prime is 28916749. The reversal of 28916744 is 44761982.

It can be written as a sum of positive squares in 2 ways, for example, as 28494244 + 422500 = 5338^2 + 650^2 .

It is not an unprimeable number, because it can be changed into a prime (28916749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2387 + ... + 7970.

Almost surely, 2^28916744 is an apocalyptic number.

It is an amenable number.

28916744 is a deficient number, since it is larger than the sum of its proper divisors (25462756).

28916744 is a wasteful number, since it uses less digits than its factorization.

28916744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10712 (or 10708 counting only the distinct ones).

The product of its digits is 96768, while the sum is 41.

The square root of 28916744 is about 5377.4291255209. The cubic root of 28916744 is about 306.9373906354.

The spelling of 28916744 in words is "twenty-eight million, nine hundred sixteen thousand, seven hundred forty-four".