28716244 has 24 divisors (see below), whose sum is σ = 51408000. Its totient is φ = 14031360.

The previous prime is 28716241. The next prime is 28716251. The reversal of 28716244 is 44261782.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28716241) 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, 63732 + ... + 64180.

It is an arithmetic number, because the mean of its divisors is an integer number (2142000).

Almost surely, 2^28716244 is an apocalyptic number.

It is an amenable number.

28716244 is a deficient number, since it is larger than the sum of its proper divisors (22691756).

28716244 is a wasteful number, since it uses less digits than its factorization.

28716244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783 (or 781 counting only the distinct ones).

The product of its digits is 21504, while the sum is 34.

The square root of 28716244 is about 5358.7539596440. The cubic root of 28716244 is about 306.2263408628.

The spelling of 28716244 in words is "twenty-eight million, seven hundred sixteen thousand, two hundred forty-four".