28116424 has 16 divisors (see below), whose sum is σ = 60249600. Its totient is φ = 12049872.

The previous prime is 28116421. The next prime is 28116437. The reversal of 28116424 is 42461182.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 28116392 and 28116401.

It is not an unprimeable number, because it can be changed into a prime (28116421) 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, 250984 + ... + 251095.

It is an arithmetic number, because the mean of its divisors is an integer number (3765600).

Almost surely, 2^28116424 is an apocalyptic number.

It is an amenable number.

28116424 is an abundant number, since it is smaller than the sum of its proper divisors (32133176).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28116424 is a wasteful number, since it uses less digits than its factorization.

28116424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502092 (or 502088 counting only the distinct ones).

The product of its digits is 3072, while the sum is 28.

The square root of 28116424 is about 5302.4922442188. The cubic root of 28116424 is about 304.0791864353.

The spelling of 28116424 in words is "twenty-eight million, one hundred sixteen thousand, four hundred twenty-four".