28718416 has 20 divisors (see below), whose sum is σ = 55871424. Its totient is φ = 14300000.

The previous prime is 28718413. The next prime is 28718447. The reversal of 28718416 is 61481782.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28718413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 441 + ... + 7591.

Almost surely, 2^28718416 is an apocalyptic number.

It is an amenable number.

28718416 is a deficient number, since it is larger than the sum of its proper divisors (27153008).

28718416 is a wasteful number, since it uses less digits than its factorization.

28718416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7410 (or 7404 counting only the distinct ones).

The product of its digits is 21504, while the sum is 37.

The square root of 28718416 is about 5358.9566148645. The cubic root of 28718416 is about 306.2340613113.

The spelling of 28718416 in words is "twenty-eight million, seven hundred eighteen thousand, four hundred sixteen".